[ECO "A00"] [Opening "Polish (Sokolsky) opening"] b4 * [ECO "A00"] [Opening "Polish"] [Variation "Tuebingen variation"] b4 Nh6 * [ECO "A00"] [Opening "Polish"] [Variation "Outflank variation"] b4 c6 * [ECO "A00"] [Opening "Benko's opening"] g3 * [ECO "A00"] [Opening "Lasker simul special"] g3 h5 * [ECO "A00"] [Opening "Benko's opening"] [Variation "reversed Alekhine"] g3 e5 Nf3 * [ECO "A00"] [Opening "Grob's attack"] g4 * [ECO "A00"] [Opening "Grob"] [Variation "spike attack"] g4 d5 Bg2 c6 g5 * [ECO "A00"] [Opening "Grob"] [Variation "Fritz gambit"] g4 d5 Bg2 Bxg4 c4 * [ECO "A00"] [Opening "Grob"] [Variation "Romford counter-gambit"] g4 d5 Bg2 Bxg4 c4 d4 * [ECO "A00"] [Opening "Clemenz (Mead's, Basman's or de Klerk's) opening"] h3 * [ECO "A00"] [Opening "Global opening"] h3 e5 a3 * [ECO "A00"] [Opening "Amar (Paris) opening"] Nh3 * [ECO "A00"] [Opening "Amar gambit"] Nh3 d5 g3 e5 f4 Bxh3 Bxh3 exf4 * [ECO "A00"] [Opening "Dunst (Sleipner, Heinrichsen) opening"] Nc3 * [ECO "A00"] [Opening "Dunst (Sleipner, Heinrichsen) opening"] Nc3 e5 * [ECO "A00"] [Opening "Battambang opening"] Nc3 e5 a3 * [ECO "A00"] [Opening "Novosibirsk opening"] Nc3 c5 d4 cxd4 Qxd4 Nc6 Qh4 * [ECO "A00"] [Opening "Anderssen's opening"] a3 * [ECO "A00"] [Opening "Ware (Meadow Hay) opening"] a4 * [ECO "A00"] [Opening "Crab opening"] a4 e5 h4 * [ECO "A00"] [Opening "Saragossa opening"] c3 * [ECO "A00"] [Opening "Mieses opening"] d3 * [ECO "A00"] [Opening "Mieses opening"] d3 e5 * [ECO "A00"] [Opening "Valencia opening"] d3 e5 Nd2 * [ECO "A00"] [Opening "Venezolana opening"] d3 c5 Nc3 Nc6 g3 * [ECO "A00"] [Opening "Van't Kruijs opening"] e3 * [ECO "A00"] [Opening "Amsterdam attack"] e3 e5 c4 d6 Nc3 Nc6 b3 Nf6 * [ECO "A00"] [Opening "Gedult's opening"] f3 * [ECO "A00"] [Opening "Hammerschlag (Fried fox/Pork chop opening)"] f3 e5 Kf2 * [ECO "A00"] [Opening "Anti-Borg (Desprez) opening"] h4 * [ECO "A00"] [Opening "Durkin's attack"] Na3 * [ECO "A01"] [Opening "Nimzovich-Larsen attack"] b3 * [ECO "A01"] [Opening "Nimzovich-Larsen attack"] [Variation "modern variation"] b3 e5 * [ECO "A01"] [Opening "Nimzovich-Larsen attack"] [Variation "Indian variation"] b3 Nf6 * [ECO "A01"] [Opening "Nimzovich-Larsen attack"] [Variation "classical variation"] b3 d5 * [ECO "A01"] [Opening "Nimzovich-Larsen attack"] [Variation "English variation"] b3 c5 * [ECO "A01"] [Opening "Nimzovich-Larsen attack"] [Variation "Dutch variation"] b3 f5 * [ECO "A01"] [Opening "Nimzovich-Larsen attack"] [Variation "Polish variation"] b3 b5 * [ECO "A01"] [Opening "Nimzovich-Larsen attack"] [Variation "symmetrical variation"] b3 b6 * [ECO "A02"] [Opening "Bird's opening"] f4 * [ECO "A02"] [Opening "Bird"] [Variation "From gambit"] f4 e5 * [ECO "A02"] [Opening "Bird"] [Variation "From gambit, Lasker variation"] f4 e5 fxe5 d6 exd6 Bxd6 Nf3 g5 * [ECO "A02"] [Opening "Bird"] [Variation "From gambit, Lipke variation"] f4 e5 fxe5 d6 exd6 Bxd6 Nf3 Nh6 d4 * [ECO "A02"] [Opening "Bird's opening, Swiss gambit"] f4 f5 e4 fxe4 Nc3 Nf6 g4 * [ECO "A02"] [Opening "Bird"] [Variation "Hobbs gambit"] f4 g5 * [ECO "A03"] [Opening "Bird's opening"] f4 d5 * [ECO "A03"] [Opening "Mujannah opening"] f4 d5 c4 * [ECO "A03"] [Opening "Bird's opening"] [Variation "Williams gambit"] f4 d5 e4 * [ECO "A03"] [Opening "Bird's opening"] [Variation "Lasker variation"] f4 d5 Nf3 Nf6 e3 c5 * [ECO "A04"] [Opening "Reti opening"] Nf3 * [ECO "A04"] [Opening "Reti v Dutch"] Nf3 f5 * [ECO "A04"] [Opening "Reti"] [Variation "Pirc-Lisitsin gambit"] Nf3 f5 e4 * [ECO "A04"] [Opening "Reti"] [Variation "Lisitsin gambit deferred"] Nf3 f5 d3 Nf6 e4 * [ECO "A04"] [Opening "Reti opening"] Nf3 d6 * [ECO "A04"] [Opening "Reti"] [Variation "Wade defence"] Nf3 d6 e4 Bg4 * [ECO "A04"] [Opening "Reti"] [Variation "Herrstroem gambit"] Nf3 g5 * [ECO "A05"] [Opening "Reti opening"] Nf3 Nf6 * [ECO "A05"] [Opening "Reti"] [Variation "King's Indian attack, Spassky's variation"] Nf3 Nf6 g3 b5 * [ECO "A05"] [Opening "Reti"] [Variation "King's Indian attack"] Nf3 Nf6 g3 g6 * [ECO "A05"] [Opening "Reti"] [Variation "King's Indian attack, Reti-Smyslov variation"] Nf3 Nf6 g3 g6 b4 * [ECO "A06"] [Opening "Reti opening"] Nf3 d5 * [ECO "A06"] [Opening "Reti"] [Variation "old Indian attack"] Nf3 d5 d3 * [ECO "A06"] [Opening "Santasiere's folly"] Nf3 d5 b4 * [ECO "A06"] [Opening "Tennison (Lemberg, Zukertort) gambit"] Nf3 d5 e4 * [ECO "A06"] [Opening "Reti"] [Variation "Nimzovich-Larsen attack"] Nf3 d5 b3 * [ECO "A07"] [Opening "Reti"] [Variation "King's Indian attack (Barcza system)"] Nf3 d5 g3 * [ECO "A07"] [Opening "Reti"] [Variation "King's Indian attack, Yugoslav variation"] Nf3 d5 g3 Nf6 Bg2 c6 O-O Bg4 * [ECO "A07"] [Opening "Reti"] [Variation "King's Indian attack, Keres variation"] Nf3 d5 g3 Bg4 Bg2 Nd7 * [ECO "A07"] [Opening "Reti"] [Variation "King's Indian attack"] Nf3 d5 g3 g6 * [ECO "A07"] [Opening "Reti"] [Variation "King's Indian attack, Pachman system"] Nf3 d5 g3 g6 Bg2 Bg7 O-O e5 d3 Ne7 * [ECO "A07"] [Opening "Reti"] [Variation "King's Indian attack (with ...c5)"] Nf3 d5 g3 c5 * [ECO "A08"] [Opening "Reti"] [Variation "King's Indian attack"] Nf3 d5 g3 c5 Bg2 * [ECO "A08"] [Opening "Reti"] [Variation "King's Indian attack, French variation"] Nf3 d5 g3 c5 Bg2 Nc6 O-O e6 d3 Nf6 Nbd2 Be7 e4 O-O Re1 * [ECO "A09"] [Opening "Reti opening"] Nf3 d5 c4 * [ECO "A09"] [Opening "Reti"] [Variation "advance variation"] Nf3 d5 c4 d4 * [ECO "A09"] [Opening "Reti accepted"] Nf3 d5 c4 dxc4 * [ECO "A09"] [Opening "Reti accepted"] [Variation "Keres variation"] Nf3 d5 c4 dxc4 e3 Be6 * [ECO "A10"] [Opening "English opening"] c4 * [ECO "A10"] [Opening "English opening"] c4 g6 * [ECO "A10"] [Opening "English"] [Variation "Adorjan defence"] c4 g6 e4 e5 * [ECO "A10"] [Opening "English"] [Variation "Jaenisch gambit"] c4 b5 * [ECO "A10"] [Opening "English"] [Variation "Anglo-Dutch defense"] c4 f5 * [ECO "A11"] [Opening "English"] [Variation "Caro-Kann defensive system"] c4 c6 * [ECO "A12"] [Opening "English"] [Variation "Caro-Kann defensive system"] c4 c6 Nf3 d5 b3 * [ECO "A12"] [Opening "English"] [Variation "Torre defensive system"] c4 c6 Nf3 d5 b3 Nf6 g3 Bg4 * [ECO "A12"] [Opening "English"] [Variation "London defensive system"] c4 c6 Nf3 d5 b3 Nf6 g3 Bf5 * [ECO "A12"] [Opening "English"] [Variation "Caro-Kann defensive system"] c4 c6 Nf3 d5 b3 Nf6 Bb2 * [ECO "A12"] [Opening "English"] [Variation "Bled variation"] c4 c6 Nf3 d5 b3 Nf6 Bb2 g6 * [ECO "A12"] [Opening "English"] [Variation "New York (London) defensive system"] c4 c6 Nf3 d5 b3 Nf6 Bb2 Bf5 * [ECO "A12"] [Opening "English"] [Variation "Capablanca's variation"] c4 c6 Nf3 d5 b3 Nf6 Bb2 Bg4 * [ECO "A12"] [Opening "English"] [Variation "Caro-Kann defensive system, Bogolyubov variation"] c4 c6 Nf3 d5 b3 Bg4 * [ECO "A13"] [Opening "English opening"] c4 e6 * [ECO "A13"] [Opening "English"] [Variation "Romanishin gambit"] c4 e6 Nf3 Nf6 g3 a6 Bg2 b5 * [ECO "A13"] [Opening "English opening"] [Variation "Agincourt variation"] c4 e6 Nf3 d5 * [ECO "A13"] [Opening "English"] [Variation "Wimpey system"] c4 e6 Nf3 d5 b3 Nf6 Bb2 c5 e3 * [ECO "A13"] [Opening "English opening"] [Variation "Agincourt variation"] c4 e6 Nf3 d5 g3 * [ECO "A13"] [Opening "English"] [Variation "Kurajica defence"] c4 e6 Nf3 d5 g3 c6 * [ECO "A13"] [Opening "English"] [Variation "Neo-Catalan"] c4 e6 Nf3 d5 g3 Nf6 * [ECO "A13"] [Opening "English"] [Variation "Neo-Catalan accepted"] c4 e6 Nf3 d5 g3 Nf6 Bg2 dxc4 * [ECO "A14"] [Opening "English"] [Variation "Neo-Catalan declined"] c4 e6 Nf3 d5 g3 Nf6 Bg2 Be7 O-O * [ECO "A14"] [Opening "English"] [Variation "Symmetrical, Keres defence"] c4 e6 Nf3 d5 g3 Nf6 Bg2 Be7 O-O c5 cxd5 Nxd5 Nc3 Nc6 * [ECO "A15"] [Opening "English, 1...Nf6 (Anglo-Indian defense)"] c4 Nf6 * [ECO "A15"] [Opening "English orang-utan"] c4 Nf6 b4 * [ECO "A15"] [Opening "English opening"] c4 Nf6 Nf3 * [ECO "A16"] [Opening "English opening"] c4 Nf6 Nc3 * [ECO "A16"] [Opening "English"] [Variation "Anglo-Gruenfeld defense"] c4 Nf6 Nc3 d5 * [ECO "A16"] [Opening "English"] [Variation "Anglo-Gruenfeld, Smyslov defense"] c4 Nf6 Nc3 d5 cxd5 Nxd5 g3 g6 Bg2 Nxc3 * [ECO "A16"] [Opening "English"] [Variation "Anglo-Gruenfeld, Czech defense"] c4 Nf6 Nc3 d5 cxd5 Nxd5 g3 g6 Bg2 Nb6 * [ECO "A16"] [Opening "English"] [Variation "Anglo-Gruenfeld defense"] c4 Nf6 Nc3 d5 cxd5 Nxd5 Nf3 * [ECO "A16"] [Opening "English"] [Variation "Anglo-Gruenfeld defense, Korchnoi variation"] c4 Nf6 Nc3 d5 cxd5 Nxd5 Nf3 g6 g3 Bg7 Bg2 e5 * [ECO "A17"] [Opening "English opening"] c4 Nf6 Nc3 e6 * [ECO "A17"] [Opening "English"] [Variation "Queens Indian formation"] c4 Nf6 Nc3 e6 Nf3 b6 * [ECO "A17"] [Opening "English"] [Variation "Queens Indian, Romanishin variation"] c4 Nf6 Nc3 e6 Nf3 b6 e4 Bb7 Bd3 * [ECO "A17"] [Opening "English"] [Variation "Nimzo-English opening"] c4 Nf6 Nc3 e6 Nf3 Bb4 * [ECO "A18"] [Opening "English"] [Variation "Mikenas-Carls variation"] c4 Nf6 Nc3 e6 e4 * [ECO "A18"] [Opening "English"] [Variation "Mikenas-Carls, Flohr variation"] c4 Nf6 Nc3 e6 e4 d5 e5 * [ECO "A18"] [Opening "English"] [Variation "Mikenas-Carls, Kevitz variation"] c4 Nf6 Nc3 e6 e4 Nc6 * [ECO "A19"] [Opening "English"] [Variation "Mikenas-Carls, Sicilian variation"] c4 Nf6 Nc3 e6 e4 c5 * [ECO "A20"] [Opening "English opening"] c4 e5 * [ECO "A20"] [Opening "English, Nimzovich variation"] c4 e5 Nf3 * [ECO "A20"] [Opening "English, Nimzovich, Flohr variation"] c4 e5 Nf3 e4 * [ECO "A21"] [Opening "English opening"] c4 e5 Nc3 * [ECO "A21"] [Opening "English, Troeger defence"] c4 e5 Nc3 d6 g3 Be6 Bg2 Nc6 * [ECO "A21"] [Opening "English, Keres variation"] c4 e5 Nc3 d6 g3 c6 * [ECO "A21"] [Opening "English opening"] c4 e5 Nc3 d6 Nf3 * [ECO "A21"] [Opening "English, Smyslov defence"] c4 e5 Nc3 d6 Nf3 Bg4 * [ECO "A21"] [Opening "English, Kramnik-Shirov counterattack"] c4 e5 Nc3 Bb4 * [ECO "A22"] [Opening "English opening"] c4 e5 Nc3 Nf6 * [ECO "A22"] [Opening "English"] [Variation "Bellon gambit"] c4 e5 Nc3 Nf6 Nf3 e4 Ng5 b5 * [ECO "A22"] [Opening "English"] [Variation "Carls' Bremen system"] c4 e5 Nc3 Nf6 g3 * [ECO "A22"] [Opening "English"] [Variation "Bremen, reverse dragon"] c4 e5 Nc3 Nf6 g3 d5 * [ECO "A22"] [Opening "English"] [Variation "Bremen, Smyslov system"] c4 e5 Nc3 Nf6 g3 Bb4 * [ECO "A23"] [Opening "English"] [Variation "Bremen system, Keres variation"] c4 e5 Nc3 Nf6 g3 c6 * [ECO "A24"] [Opening "English"] [Variation "Bremen system with ...g6"] c4 e5 Nc3 Nf6 g3 g6 * [ECO "A25"] [Opening "English"] [Variation "Sicilian reversed"] c4 e5 Nc3 Nc6 * [ECO "A25"] [Opening "English"] [Variation "closed system"] c4 e5 Nc3 Nc6 g3 g6 Bg2 Bg7 * [ECO "A25"] [Opening "English"] [Variation "closed, Taimanov variation"] c4 e5 Nc3 Nc6 g3 g6 Bg2 Bg7 e3 d6 Nge2 Nh6 * [ECO "A25"] [Opening "English"] [Variation "closed, Hort variation"] c4 e5 Nc3 Nc6 g3 g6 Bg2 Bg7 e3 d6 Nge2 Be6 * [ECO "A25"] [Opening "English"] [Variation "closed, 5.Rb1"] c4 e5 Nc3 Nc6 g3 g6 Bg2 Bg7 Rb1 * [ECO "A25"] [Opening "English"] [Variation "closed, 5.Rb1 Taimanov variation"] c4 e5 Nc3 Nc6 g3 g6 Bg2 Bg7 Rb1 Nh6 * [ECO "A25"] [Opening "English"] [Variation "closed system (without ...d6)"] c4 e5 Nc3 Nc6 g3 g6 Bg2 Bg7 d3 * [ECO "A26"] [Opening "English"] [Variation "closed system"] c4 e5 Nc3 Nc6 g3 g6 Bg2 Bg7 d3 d6 * [ECO "A26"] [Opening "English"] [Variation "Botvinnik system"] c4 e5 Nc3 Nc6 g3 g6 Bg2 Bg7 d3 d6 e4 * [ECO "A27"] [Opening "English"] [Variation "three knights system"] c4 e5 Nc3 Nc6 Nf3 * [ECO "A28"] [Opening "English"] [Variation "four knights system"] c4 e5 Nc3 Nc6 Nf3 Nf6 * [ECO "A28"] [Opening "English"] [Variation "Nenarokov variation"] c4 e5 Nc3 Nc6 Nf3 Nf6 d4 exd4 Nxd4 Bb4 Bg5 h6 Bh4 Bxc3+ bxc3 Ne5 * [ECO "A28"] [Opening "English"] [Variation "Bradley Beach variation"] c4 e5 Nc3 Nc6 Nf3 Nf6 d4 e4 * [ECO "A28"] [Opening "English"] [Variation "four knights, Nimzovich variation"] c4 e5 Nc3 Nc6 Nf3 Nf6 e4 * [ECO "A28"] [Opening "English"] [Variation "four knights, Marini variation"] c4 e5 Nc3 Nc6 Nf3 Nf6 a3 * [ECO "A28"] [Opening "English"] [Variation "four knights, Capablanca variation"] c4 e5 Nc3 Nc6 Nf3 Nf6 d3 * [ECO "A28"] [Opening "English"] [Variation "four knights, 4.e3"] c4 e5 Nc3 Nc6 Nf3 Nf6 e3 * [ECO "A28"] [Opening "English"] [Variation "four knights, Stean variation"] c4 e5 Nc3 Nc6 Nf3 Nf6 e3 Bb4 Qc2 O-O Nd5 Re8 Qf5 * [ECO "A28"] [Opening "English"] [Variation "four knights, Romanishin variation"] c4 e5 Nc3 Nc6 Nf3 Nf6 e3 Bb4 Qc2 Bxc3 * [ECO "A29"] [Opening "English"] [Variation "four knights, kingside fianchetto"] c4 e5 Nc3 Nc6 Nf3 Nf6 g3 * [ECO "A30"] [Opening "English"] [Variation "symmetrical variation"] c4 c5 * [ECO "A30"] [Opening "English"] [Variation "symmetrical, hedgehog system"] c4 c5 Nf3 Nf6 g3 b6 Bg2 Bb7 O-O e6 Nc3 Be7 * [ECO "A30"] [Opening "English"] [Variation "symmetrical, hedgehog, flexible formation"] c4 c5 Nf3 Nf6 g3 b6 Bg2 Bb7 O-O e6 Nc3 Be7 d4 cxd4 Qxd4 d6 Rd1 a6 b3 Nbd7 * [ECO "A31"] [Opening "English"] [Variation "symmetrical, Benoni formation"] c4 c5 Nf3 Nf6 d4 * [ECO "A32"] [Opening "English"] [Variation "symmetrical variation"] c4 c5 Nf3 Nf6 d4 cxd4 Nxd4 e6 * [ECO "A33"] [Opening "English"] [Variation "symmetrical variation"] c4 c5 Nf3 Nf6 d4 cxd4 Nxd4 e6 Nc3 Nc6 * [ECO "A33"] [Opening "English"] [Variation "symmetrical, Geller variation"] c4 c5 Nf3 Nf6 d4 cxd4 Nxd4 e6 Nc3 Nc6 g3 Qb6 * [ECO "A34"] [Opening "English"] [Variation "symmetrical variation"] c4 c5 Nc3 * [ECO "A34"] [Opening "English"] [Variation "symmetrical, three knights system"] c4 c5 Nc3 Nf6 Nf3 d5 cxd5 Nxd5 * [ECO "A34"] [Opening "English"] [Variation "symmetrical variation"] c4 c5 Nc3 Nf6 g3 * [ECO "A34"] [Opening "English"] [Variation "symmetrical, Rubinstein system"] c4 c5 Nc3 Nf6 g3 d5 cxd5 Nxd5 Bg2 Nc7 * [ECO "A35"] [Opening "English"] [Variation "symmetrical variation"] c4 c5 Nc3 Nc6 * [ECO "A35"] [Opening "English"] [Variation "symmetrical, four knights system"] c4 c5 Nc3 Nc6 Nf3 Nf6 * [ECO "A36"] [Opening "English"] [Variation "symmetrical variation"] c4 c5 Nc3 Nc6 g3 * [ECO "A36"] [Opening "English"] [Variation "ultra-symmetrical variation"] c4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 * [ECO "A36"] [Opening "English"] [Variation "symmetrical, Botvinnik system reversed"] c4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 e3 e5 * [ECO "A36"] [Opening "English"] [Variation "symmetrical, Botvinnik system"] c4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 e4 * [ECO "A37"] [Opening "English"] [Variation "symmetrical variation"] c4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 Nf3 * [ECO "A37"] [Opening "English"] [Variation "symmetrical, Botvinnik system reversed"] c4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 Nf3 e5 * [ECO "A38"] [Opening "English"] [Variation "symmetrical variation"] c4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 Nf3 Nf6 * [ECO "A38"] [Opening "English"] [Variation "symmetrical, main line with d3"] c4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 Nf3 Nf6 O-O O-O d3 * [ECO "A38"] [Opening "English"] [Variation "symmetrical, main line with b3"] c4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 Nf3 Nf6 O-O O-O b3 * [ECO "A39"] [Opening "English"] [Variation "symmetrical, main line with d4"] c4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 Nf3 Nf6 O-O O-O d4 * [ECO "A40"] [Opening "Queen's pawn"] d4 * [ECO "A40"] [Opening "Queen's pawn"] [Variation "Lundin (Kevitz-Mikenas) defence"] d4 Nc6 * [ECO "A40"] [Opening "Queen's pawn"] [Variation "Charlick (Englund) gambit"] d4 e5 * [ECO "A40"] [Opening "Queen's pawn"] [Variation "Englund gambit"] d4 e5 dxe5 Nc6 Nf3 Qe7 Qd5 f6 exf6 Nxf6 * [ECO "A40"] [Opening "Queen's pawn"] [Variation "English defence"] d4 b6 * [ECO "A40"] [Opening "Polish defence"] d4 b5 * [ECO "A40"] [Opening "Queen's pawn"] d4 e6 * [ECO "A40"] [Opening "Queen's pawn"] [Variation "Keres defence"] d4 e6 c4 b6 * [ECO "A40"] [Opening "Queen's pawn"] [Variation "Franco-Indian (Keres) defence"] d4 e6 c4 Bb4+ * [ECO "A40"] [Opening "Modern defence"] d4 g6 * [ECO "A40"] [Opening "Beefeater defence"] d4 g6 c4 Bg7 Nc3 c5 d5 Bxc3+ bxc3 f5 * [ECO "A41"] [Opening "Queen's Pawn"] d4 d6 * [ECO "A41"] [Opening "Old Indian"] [Variation "Tartakower (Wade) variation"] d4 d6 Nf3 Bg4 * [ECO "A41"] [Opening "Old Indian defence"] d4 d6 c4 * [ECO "A41"] [Opening "Modern defence"] d4 d6 c4 g6 Nc3 Bg7 * [ECO "A41"] [Opening "Robatsch defence"] [Variation "Rossolimo variation"] e4 g6 d4 Bg7 Nf3 d6 c4 Bg4 * [ECO "A42"] [Opening "Modern defence"] [Variation "Averbakh system"] d4 d6 c4 g6 Nc3 Bg7 e4 * [ECO "A42"] [Opening "Pterodactyl defence"] d4 d6 c4 g6 Nc3 Bg7 e4 c5 Nf3 Qa5 * [ECO "A42"] [Opening "Modern defence"] [Variation "Averbakh system, Randspringer variation"] d4 d6 c4 g6 Nc3 Bg7 e4 f5 * [ECO "A42"] [Opening "Modern defence"] [Variation "Averbakh system, Kotov variation"] d4 d6 c4 g6 Nc3 Bg7 e4 Nc6 * [ECO "A43"] [Opening "Old Benoni defence"] d4 c5 * [ECO "A43"] [Opening "Old Benoni"] [Variation "Franco-Benoni defence"] d4 c5 d5 e6 e4 * [ECO "A43"] [Opening "Old Benoni"] [Variation "Mujannah formation"] d4 c5 d5 f5 * [ECO "A43"] [Opening "Old Benoni defence"] d4 c5 d5 Nf6 * [ECO "A43"] [Opening "Woozle defence"] d4 c5 d5 Nf6 Nc3 Qa5 * [ECO "A43"] [Opening "Old Benoni defence"] d4 c5 d5 Nf6 Nf3 * [ECO "A43"] [Opening "Hawk (Habichd) defence"] d4 c5 d5 Nf6 Nf3 c4 * [ECO "A43"] [Opening "Old Benoni defence"] d4 c5 d5 d6 * [ECO "A43"] [Opening "Old Benoni"] [Variation "Schmid's system"] d4 c5 d5 d6 Nc3 g6 * [ECO "A44"] [Opening "Old Benoni defence"] d4 c5 d5 e5 * [ECO "A44"] [Opening "Semi-Benoni (`blockade variation')"] d4 c5 d5 e5 e4 d6 * [ECO "A45"] [Opening "Queen's pawn game"] d4 Nf6 * [ECO "A45"] [Opening "Queen's pawn"] [Variation "Bronstein gambit"] d4 Nf6 g4 * [ECO "A45"] [Opening "Canard opening"] d4 Nf6 f4 * [ECO "A45"] [Opening "Paleface attack"] d4 Nf6 f3 * [ECO "A45"] [Opening "Blackmar-Diemer gambit"] d4 Nf6 f3 d5 e4 * [ECO "A45"] [Opening "Gedult attack"] d4 Nf6 f3 d5 g4 * [ECO "A45"] [Opening "Trompovsky attack (Ruth, Opovcensky opening)"] d4 Nf6 Bg5 * [ECO "A46"] [Opening "Queen's pawn game"] d4 Nf6 Nf3 * [ECO "A46"] [Opening "Queen's pawn"] [Variation "Torre attack"] d4 Nf6 Nf3 e6 Bg5 * [ECO "A46"] [Opening "Queen's pawn"] [Variation "Torre attack, Wagner gambit"] d4 Nf6 Nf3 e6 Bg5 c5 e4 * [ECO "A46"] [Opening "Queen's pawn"] [Variation "Yusupov-Rubinstein system"] d4 Nf6 Nf3 e6 e3 * [ECO "A46"] [Opening "Doery defence"] d4 Nf6 Nf3 Ne4 * [ECO "A47"] [Opening "Queen's Indian defence"] d4 Nf6 Nf3 b6 * [ECO "A47"] [Opening "Queen's Indian"] [Variation "Marienbad system"] d4 Nf6 Nf3 b6 g3 Bb7 Bg2 c5 * [ECO "A47"] [Opening "Queen's Indian"] [Variation "Marienbad system, Berg variation"] d4 Nf6 Nf3 b6 g3 Bb7 Bg2 c5 c4 cxd4 Qxd4 * [ECO "A48"] [Opening "King's Indian"] [Variation "East Indian defence"] d4 Nf6 Nf3 g6 * [ECO "A48"] [Opening "King's Indian"] [Variation "Torre attack"] d4 Nf6 Nf3 g6 Bg5 * [ECO "A48"] [Opening "King's Indian"] [Variation "London system"] d4 Nf6 Nf3 g6 Bf4 * [ECO "A49"] [Opening "King's Indian"] [Variation "fianchetto without c4"] d4 Nf6 Nf3 g6 g3 * [ECO "A50"] [Opening "Queen's pawn game"] d4 Nf6 c4 * [ECO "A50"] [Opening "Kevitz-Trajkovich defence"] d4 Nf6 c4 Nc6 * [ECO "A50"] [Opening "Queen's Indian accelerated"] d4 Nf6 c4 b6 * [ECO "A51"] [Opening "Budapest defence declined"] d4 Nf6 c4 e5 * [ECO "A51"] [Opening "Budapest"] [Variation "Fajarowicz variation"] d4 Nf6 c4 e5 dxe5 Ne4 * [ECO "A51"] [Opening "Budapest"] [Variation "Fajarowicz, Steiner variation"] d4 Nf6 c4 e5 dxe5 Ne4 Qc2 * [ECO "A52"] [Opening "Budapest defence"] d4 Nf6 c4 e5 dxe5 Ng4 * [ECO "A52"] [Opening "Budapest"] [Variation "Adler variation"] d4 Nf6 c4 e5 dxe5 Ng4 Nf3 * [ECO "A52"] [Opening "Budapest"] [Variation "Rubinstein variation"] d4 Nf6 c4 e5 dxe5 Ng4 Bf4 * [ECO "A52"] [Opening "Budapest"] [Variation "Alekhine variation"] d4 Nf6 c4 e5 dxe5 Ng4 e4 * [ECO "A52"] [Opening "Budapest"] [Variation "Alekhine, Abonyi variation"] d4 Nf6 c4 e5 dxe5 Ng4 e4 Nxe5 f4 Nec6 * [ECO "A52"] [Opening "Budapest"] [Variation "Alekhine variation, Balogh gambit"] d4 Nf6 c4 e5 dxe5 Ng4 e4 d6 * [ECO "A53"] [Opening "Old Indian defence"] d4 Nf6 c4 d6 * [ECO "A53"] [Opening "Old Indian"] [Variation "Janowski variation"] d4 Nf6 c4 d6 Nc3 Bf5 * [ECO "A54"] [Opening "Old Indian"] [Variation "Ukrainian variation"] d4 Nf6 c4 d6 Nc3 e5 * [ECO "A54"] [Opening "Old Indian"] [Variation "Dus-Khotimirsky variation"] d4 Nf6 c4 d6 Nc3 e5 e3 Nbd7 Bd3 * [ECO "A54"] [Opening "Old Indian"] [Variation "Ukrainian variation, 4.Nf3"] d4 Nf6 c4 d6 Nc3 e5 Nf3 * [ECO "A55"] [Opening "Old Indian"] [Variation "main line"] d4 Nf6 c4 d6 Nc3 e5 Nf3 Nbd7 e4 * [ECO "A56"] [Opening "Benoni defence"] d4 Nf6 c4 c5 * [ECO "A56"] [Opening "Benoni defence, Hromodka system"] d4 Nf6 c4 c5 d5 d6 * [ECO "A56"] [Opening "Vulture defence"] d4 Nf6 c4 c5 d5 Ne4 * [ECO "A56"] [Opening "Czech Benoni defence"] d4 Nf6 c4 c5 d5 e5 * [ECO "A56"] [Opening "Czech Benoni"] [Variation "King's Indian system"] d4 Nf6 c4 c5 d5 e5 Nc3 d6 e4 g6 * [ECO "A57"] [Opening "Benko gambit"] d4 Nf6 c4 c5 d5 b5 * [ECO "A57"] [Opening "Benko gambit half accepted"] d4 Nf6 c4 c5 d5 b5 cxb5 a6 * [ECO "A57"] [Opening "Benko gambit"] [Variation "Zaitsev system"] d4 Nf6 c4 c5 d5 b5 cxb5 a6 Nc3 * [ECO "A57"] [Opening "Benko gambit"] [Variation "Nescafe Frappe attack"] d4 Nf6 c4 c5 d5 b5 cxb5 a6 Nc3 axb5 e4 b4 Nb5 d6 Bc4 * [ECO "A58"] [Opening "Benko gambit accepted"] d4 Nf6 c4 c5 d5 b5 cxb5 a6 bxa6 * [ECO "A58"] [Opening "Benko gambit"] [Variation "Nd2 variation"] d4 Nf6 c4 c5 d5 b5 cxb5 a6 bxa6 Bxa6 Nc3 d6 Nf3 g6 Nd2 * [ECO "A58"] [Opening "Benko gambit"] [Variation "fianchetto variation"] d4 Nf6 c4 c5 d5 b5 cxb5 a6 bxa6 Bxa6 Nc3 d6 Nf3 g6 g3 * [ECO "A59"] [Opening "Benko gambit"] [Variation "7.e4"] d4 Nf6 c4 c5 d5 b5 cxb5 a6 bxa6 Bxa6 Nc3 d6 e4 * [ECO "A59"] [Opening "Benko gambit"] [Variation "Ne2 variation"] d4 Nf6 c4 c5 d5 b5 cxb5 a6 bxa6 Bxa6 Nc3 d6 e4 Bxf1 Kxf1 g6 Nge2 * [ECO "A59"] [Opening "Benko gambit"] d4 Nf6 c4 c5 d5 b5 cxb5 a6 bxa6 Bxa6 Nc3 d6 e4 Bxf1 Kxf1 g6 g3 * [ECO "A59"] [Opening "Benko gambit"] [Variation "main line"] d4 Nf6 c4 c5 d5 b5 cxb5 a6 bxa6 Bxa6 Nc3 d6 e4 Bxf1 Kxf1 g6 g3 Bg7 Kg2 O-O Nf3 * [ECO "A60"] [Opening "Benoni defence"] d4 Nf6 c4 c5 d5 e6 * [ECO "A61"] [Opening "Benoni defence"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 Nf3 g6 * [ECO "A61"] [Opening "Benoni"] [Variation "Uhlmann variation"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 Nf3 g6 Bg5 * [ECO "A61"] [Opening "Benoni"] [Variation "Nimzovich (knight's tour) variation"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 Nf3 g6 Nd2 * [ECO "A61"] [Opening "Benoni"] [Variation "fianchetto variation"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 Nf3 g6 g3 * [ECO "A62"] [Opening "Benoni"] [Variation "fianchetto variation"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 Nf3 g6 g3 Bg7 Bg2 O-O * [ECO "A63"] [Opening "Benoni"] [Variation "fianchetto, 9...Nbd7"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 Nf3 g6 g3 Bg7 Bg2 O-O O-O Nbd7 * [ECO "A64"] [Opening "Benoni"] [Variation "fianchetto, 11...Re8"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 Nf3 g6 g3 Bg7 Bg2 O-O O-O Nbd7 Nd2 a6 a4 Re8 * [ECO "A65"] [Opening "Benoni"] [Variation "6.e4"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 * [ECO "A66"] [Opening "Benoni"] [Variation "pawn storm variation"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 f4 * [ECO "A66"] [Opening "Benoni"] [Variation "Mikenas variation"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 f4 Bg7 e5 * [ECO "A67"] [Opening "Benoni"] [Variation "Taimanov variation"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 f4 Bg7 Bb5+ * [ECO "A68"] [Opening "Benoni"] [Variation "four pawns attack"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 f4 Bg7 Nf3 O-O * [ECO "A69"] [Opening "Benoni"] [Variation "four pawns attack, main line"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 f4 Bg7 Nf3 O-O Be2 Re8 * [ECO "A70"] [Opening "Benoni"] [Variation "classical with e4 and Nf3"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 * [ECO "A70"] [Opening "Benoni"] [Variation "classical without 9.O-O"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Be2 * [ECO "A71"] [Opening "Benoni"] [Variation "classical, 8.Bg5"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Bg5 * [ECO "A72"] [Opening "Benoni"] [Variation "classical without 9.O-O"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Be2 O-O * [ECO "A73"] [Opening "Benoni"] [Variation "classical, 9.O-O"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Be2 O-O O-O * [ECO "A74"] [Opening "Benoni"] [Variation "classical, 9...a6, 10.a4"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Be2 O-O O-O a6 a4 * [ECO "A75"] [Opening "Benoni"] [Variation "classical with ...a6 and 10...Bg4"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Be2 O-O O-O a6 a4 Bg4 * [ECO "A76"] [Opening "Benoni"] [Variation "classical, 9...Re8"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Be2 O-O O-O Re8 * [ECO "A77"] [Opening "Benoni"] [Variation "classical, 9...Re8, 10.Nd2"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Be2 O-O O-O Re8 Nd2 * [ECO "A78"] [Opening "Benoni"] [Variation "classical with ...Re8 and ...Na6"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Be2 O-O O-O Re8 Nd2 Na6 * [ECO "A79"] [Opening "Benoni"] [Variation "classical, 11.f3"] d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Be2 O-O O-O Re8 Nd2 Na6 f3 * [ECO "A80"] [Opening "Dutch"] d4 f5 * [ECO "A80"] [Opening "Dutch, Spielmann gambit"] d4 f5 Nc3 Nf6 g4 * [ECO "A80"] [Opening "Dutch, Manhattan (Alapin, Ulvestad) variation"] d4 f5 Qd3 * [ECO "A80"] [Opening "Dutch, Von Pretzel gambit"] d4 f5 Qd3 e6 g4 * [ECO "A80"] [Opening "Dutch, Korchnoi attack"] d4 f5 h3 * [ECO "A80"] [Opening "Dutch, Krejcik gambit"] d4 f5 g4 * [ECO "A80"] [Opening "Dutch, 2.Bg5 variation"] d4 f5 Bg5 * [ECO "A81"] [Opening "Dutch defence"] d4 f5 g3 * [ECO "A81"] [Opening "Dutch defence, Blackburne variation"] d4 f5 g3 Nf6 Bg2 e6 Nh3 * [ECO "A81"] [Opening "Dutch defence"] d4 f5 g3 Nf6 Bg2 g6 * [ECO "A81"] [Opening "Dutch"] [Variation "Leningrad, Basman system"] d4 f5 g3 g6 Bg2 Bg7 Nf3 c6 O-O Nh6 * [ECO "A81"] [Opening "Dutch"] [Variation "Leningrad, Karlsbad variation"] d4 f5 g3 g6 Bg2 Bg7 Nh3 * [ECO "A82"] [Opening "Dutch"] [Variation "Staunton gambit"] d4 f5 e4 * [ECO "A82"] [Opening "Dutch"] [Variation "Balogh defence"] d4 f5 e4 d6 * [ECO "A82"] [Opening "Dutch"] [Variation "Staunton gambit"] d4 f5 e4 fxe4 * [ECO "A82"] [Opening "Dutch"] [Variation "Staunton gambit, Tartakower variation"] d4 f5 e4 fxe4 Nc3 Nf6 g4 * [ECO "A83"] [Opening "Dutch"] [Variation "Staunton gambit, Staunton's line"] d4 f5 e4 fxe4 Nc3 Nf6 Bg5 * [ECO "A83"] [Opening "Dutch"] [Variation "Staunton gambit, Alekhine variation"] d4 f5 e4 fxe4 Nc3 Nf6 Bg5 g6 h4 * [ECO "A83"] [Opening "Dutch"] [Variation "Staunton gambit, Lasker variation"] d4 f5 e4 fxe4 Nc3 Nf6 Bg5 g6 f3 * [ECO "A83"] [Opening "Dutch"] [Variation "Staunton gambit, Chigorin variation"] d4 f5 e4 fxe4 Nc3 Nf6 Bg5 c6 * [ECO "A83"] [Opening "Dutch"] [Variation "Staunton gambit, Nimzovich variation"] d4 f5 e4 fxe4 Nc3 Nf6 Bg5 b6 * [ECO "A84"] [Opening "Dutch defence"] d4 f5 c4 * [ECO "A84"] [Opening "Dutch defence"] [Variation "Bladel variation"] d4 f5 c4 g6 Nc3 Nh6 * [ECO "A84"] [Opening "Dutch defence"] d4 f5 c4 e6 * [ECO "A84"] [Opening "Dutch defence, Rubinstein variation"] d4 f5 c4 e6 Nc3 * [ECO "A84"] [Opening "Dutch"] [Variation "Staunton gambit deferred"] d4 f5 c4 e6 e4 * [ECO "A84"] [Opening "Dutch defence"] d4 f5 c4 Nf6 * [ECO "A85"] [Opening "Dutch with c4 & Nc3"] d4 f5 c4 Nf6 Nc3 * [ECO "A86"] [Opening "Dutch with c4 & g3"] d4 f5 c4 Nf6 g3 * [ECO "A86"] [Opening "Dutch"] [Variation "Hort-Antoshin system"] d4 f5 c4 Nf6 g3 d6 Bg2 c6 Nc3 Qc7 * [ECO "A86"] [Opening "Dutch"] [Variation "Leningrad variation"] d4 f5 c4 Nf6 g3 g6 * [ECO "A87"] [Opening "Dutch"] [Variation "Leningrad, main variation"] d4 f5 c4 Nf6 g3 g6 Bg2 Bg7 Nf3 * [ECO "A88"] [Opening "Dutch"] [Variation "Leningrad, main variation with c6"] d4 f5 c4 Nf6 g3 g6 Bg2 Bg7 Nf3 O-O O-O d6 Nc3 c6 * [ECO "A89"] [Opening "Dutch"] [Variation "Leningrad, main variation with Nc6"] d4 f5 c4 Nf6 g3 g6 Bg2 Bg7 Nf3 O-O O-O d6 Nc3 Nc6 * [ECO "A90"] [Opening "Dutch defence"] d4 f5 c4 Nf6 g3 e6 Bg2 * [ECO "A90"] [Opening "Dutch defence"] [Variation "Dutch-Indian (Nimzo-Dutch) variation"] d4 f5 c4 Nf6 g3 e6 Bg2 Bb4+ * [ECO "A90"] [Opening "Dutch-Indian, Alekhine variation"] d4 f5 c4 Nf6 g3 e6 Bg2 Bb4+ Bd2 Be7 * [ECO "A91"] [Opening "Dutch defence"] d4 f5 c4 Nf6 g3 e6 Bg2 Be7 * [ECO "A92"] [Opening "Dutch defence"] d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O * [ECO "A92"] [Opening "Dutch defence, Alekhine variation"] d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O Ne4 * [ECO "A92"] [Opening "Dutch"] [Variation "stonewall variation"] d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d5 * [ECO "A92"] [Opening "Dutch"] [Variation "stonewall with Nc3"] d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d5 Nc3 * [ECO "A93"] [Opening "Dutch"] [Variation "stonewall, Botwinnik variation"] d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d5 b3 * [ECO "A94"] [Opening "Dutch"] [Variation "stonewall with Ba3"] d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d5 b3 c6 Ba3 * [ECO "A95"] [Opening "Dutch"] [Variation "stonewall with Nc3"] d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d5 Nc3 c6 * [ECO "A95"] [Opening "Dutch"] [Variation "stonewall: Chekhover variation"] d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d5 Nc3 c6 Qc2 Qe8 Bg5 * [ECO "A96"] [Opening "Dutch"] [Variation "classical variation"] d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d6 * [ECO "A97"] [Opening "Dutch"] [Variation "Ilyin-Genevsky variation"] d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d6 Nc3 Qe8 * [ECO "A97"] [Opening "Dutch"] [Variation "Ilyin-Genevsky, Winter variation"] d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d6 Nc3 Qe8 Re1 * [ECO "A98"] [Opening "Dutch"] [Variation "Ilyin-Genevsky variation with Qc2"] d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d6 Nc3 Qe8 Qc2 * [ECO "A99"] [Opening "Dutch"] [Variation "Ilyin-Genevsky variation with b3"] d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d6 Nc3 Qe8 b3 * [ECO "B00"] [Opening "King's pawn opening"] e4 * [ECO "B00"] [Opening "Hippopotamus defence"] e4 Nh6 d4 g6 c4 f6 * [ECO "B00"] [Opening "Corn stalk defence"] e4 a5 * [ECO "B00"] [Opening "Lemming defence"] e4 Na6 * [ECO "B00"] [Opening "Fred"] e4 f5 * [ECO "B00"] [Opening "Barnes defence"] e4 f6 * [ECO "B00"] [Opening "Fried fox defence"] e4 f6 d4 Kf7 * [ECO "B00"] [Opening "Carr's defence"] e4 h6 * [ECO "B00"] [Opening "Reversed Grob (Borg/Basman defence/macho Grob)"] e4 g5 * [ECO "B00"] [Opening "St. George (Baker) defence"] e4 a6 * [ECO "B00"] [Opening "Owen defence"] e4 b6 * [ECO "B00"] [Opening "Guatemala defence"] e4 b6 d4 Ba6 * [ECO "B00"] [Opening "KP"] [Variation "Nimzovich defence"] e4 Nc6 * [ECO "B00"] [Opening "KP"] [Variation "Nimzovich defence, Wheeler gambit"] e4 Nc6 b4 Nxb4 c3 Nc6 d4 * [ECO "B00"] [Opening "KP"] [Variation "Nimzovich defence"] e4 Nc6 Nf3 * [ECO "B00"] [Opening "KP"] [Variation "Colorado counter"] e4 Nc6 Nf3 f5 * [ECO "B00"] [Opening "KP"] [Variation "Nimzovich defence"] e4 Nc6 d4 * [ECO "B00"] [Opening "KP"] [Variation "Nimzovich defence, Marshall gambit"] e4 Nc6 d4 d5 exd5 Qxd5 Nc3 * [ECO "B00"] [Opening "KP"] [Variation "Nimzovich defence, Bogolyubov variation"] e4 Nc6 d4 d5 Nc3 * [ECO "B00"] [Opening "KP"] [Variation "Neo-Mongoloid defence"] e4 Nc6 d4 f6 * [ECO "B01"] [Opening "Scandinavian (centre counter) defence"] e4 d5 * [ECO "B01"] [Opening "Scandinavian defence, Lasker variation"] e4 d5 exd5 Qxd5 Nc3 Qa5 d4 Nf6 Nf3 Bg4 h3 * [ECO "B01"] [Opening "Scandinavian defence"] e4 d5 exd5 Qxd5 Nc3 Qa5 d4 Nf6 Nf3 Bf5 * [ECO "B01"] [Opening "Scandinavian defence, Gruenfeld variation"] e4 d5 exd5 Qxd5 Nc3 Qa5 d4 Nf6 Nf3 Bf5 Ne5 c6 g4 * [ECO "B01"] [Opening "Scandinavian"] [Variation "Anderssen counter-attack"] e4 d5 exd5 Qxd5 Nc3 Qa5 d4 e5 * [ECO "B01"] [Opening "Scandinavian"] [Variation "Anderssen counter-attack orthodox attack"] e4 d5 exd5 Qxd5 Nc3 Qa5 d4 e5 dxe5 Bb4 Bd2 Nc6 Nf3 * [ECO "B01"] [Opening "Scandinavian"] [Variation "Anderssen counter-attack, Goteborg system"] e4 d5 exd5 Qxd5 Nc3 Qa5 d4 e5 Nf3 * [ECO "B01"] [Opening "Scandinavian"] [Variation "Anderssen counter-attack, Collijn variation"] e4 d5 exd5 Qxd5 Nc3 Qa5 d4 e5 Nf3 Bg4 * [ECO "B01"] [Opening "Scandinavian, Mieses-Kotrvc gambit"] e4 d5 exd5 Qxd5 Nc3 Qa5 b4 * [ECO "B01"] [Opening "Scandinavian"] [Variation "Pytel-Wade variation"] e4 d5 exd5 Qxd5 Nc3 Qd6 * [ECO "B01"] [Opening "Scandinavian defence"] e4 d5 exd5 Nf6 * [ECO "B01"] [Opening "Scandinavian"] [Variation "Icelandic gambit"] e4 d5 exd5 Nf6 c4 e6 * [ECO "B01"] [Opening "Scandinavian gambit"] e4 d5 exd5 Nf6 c4 c6 * [ECO "B01"] [Opening "Scandinavian defence"] e4 d5 exd5 Nf6 d4 * [ECO "B01"] [Opening "Scandinavian"] [Variation "Marshall variation"] e4 d5 exd5 Nf6 d4 Nxd5 * [ECO "B01"] [Opening "Scandinavian"] [Variation "Kiel variation"] e4 d5 exd5 Nf6 d4 Nxd5 c4 Nb4 * [ECO "B01"] [Opening "Scandinavian"] [Variation "Richter variation"] e4 d5 exd5 Nf6 d4 g6 * [ECO "B02"] [Opening "Alekhine's defence"] e4 Nf6 * [ECO "B02"] [Opening "Alekhine's defence"] [Variation "Scandinavian variation"] e4 Nf6 Nc3 d5 * [ECO "B02"] [Opening "Alekhine's defence"] [Variation "Spielmann variation"] e4 Nf6 Nc3 d5 e5 Nfd7 e6 * [ECO "B02"] [Opening "Alekhine's defence"] [Variation "Maroczy variation"] e4 Nf6 d3 * [ECO "B02"] [Opening "Alekhine's defence"] [Variation "Krejcik variation"] e4 Nf6 Bc4 * [ECO "B02"] [Opening "Alekhine's defence"] [Variation "Mokele Mbembe (Buecker) variation"] e4 Nf6 e5 Ne4 * [ECO "B02"] [Opening "Alekhine's defence"] [Variation "Brooklyn defence"] e4 Nf6 e5 Ng8 * [ECO "B02"] [Opening "Alekhine's defence"] e4 Nf6 e5 Nd5 * [ECO "B02"] [Opening "Alekhine's defence"] [Variation "Kmoch variation"] e4 Nf6 e5 Nd5 Bc4 Nb6 Bb3 c5 d3 * [ECO "B02"] [Opening "Alekhine's defence"] [Variation "Saemisch attack"] e4 Nf6 e5 Nd5 Nc3 * [ECO "B02"] [Opening "Alekhine's defence"] [Variation "Welling variation"] e4 Nf6 e5 Nd5 b3 * [ECO "B02"] [Opening "Alekhine's defence"] e4 Nf6 e5 Nd5 c4 * [ECO "B02"] [Opening "Alekhine's defence"] [Variation "Steiner variation"] e4 Nf6 e5 Nd5 c4 Nb6 b3 * [ECO "B02"] [Opening "Alekhine's defence"] [Variation "two pawns' (Lasker's) attack"] e4 Nf6 e5 Nd5 c4 Nb6 c5 * [ECO "B02"] [Opening "Alekhine's defence"] [Variation "two pawns' attack, Mikenas variation"] e4 Nf6 e5 Nd5 c4 Nb6 c5 Nd5 Bc4 e6 Nc3 d6 * [ECO "B03"] [Opening "Alekhine's defence"] e4 Nf6 e5 Nd5 d4 * [ECO "B03"] [Opening "Alekhine's defence"] [Variation "O'Sullivan gambit"] e4 Nf6 e5 Nd5 d4 b5 * [ECO "B03"] [Opening "Alekhine's defence"] e4 Nf6 e5 Nd5 d4 d6 * [ECO "B03"] [Opening "Alekhine's defence"] [Variation "Balogh variation"] e4 Nf6 e5 Nd5 d4 d6 Bc4 * [ECO "B03"] [Opening "Alekhine's defence"] e4 Nf6 e5 Nd5 d4 d6 c4 * [ECO "B03"] [Opening "Alekhine's defence"] [Variation "exchange variation"] e4 Nf6 e5 Nd5 d4 d6 c4 Nb6 exd6 * [ECO "B03"] [Opening "Alekhine's defence"] [Variation "exchange, Karpov variation"] e4 Nf6 e5 Nd5 d4 d6 c4 Nb6 exd6 cxd6 Nf3 g6 Be2 Bg7 O-O O-O h3 Nc6 Nc3 Bf5 Bf4 * [ECO "B03"] [Opening "Alekhine's defence"] [Variation "four pawns attack"] e4 Nf6 e5 Nd5 d4 d6 c4 Nb6 f4 * [ECO "B03"] [Opening "Alekhine's defence"] [Variation "four pawns attack, Korchnoi variation"] e4 Nf6 e5 Nd5 d4 d6 c4 Nb6 f4 dxe5 fxe5 Bf5 Nc3 e6 Nf3 Be7 Be2 O-O O-O f6 * [ECO "B03"] [Opening "Alekhine's defence"] [Variation "four pawns attack, 6...Nc6"] e4 Nf6 e5 Nd5 d4 d6 c4 Nb6 f4 dxe5 fxe5 Nc6 * [ECO "B03"] [Opening "Alekhine's defence"] [Variation "four pawns attack, Ilyin-Genevsky var."] e4 Nf6 e5 Nd5 d4 d6 c4 Nb6 f4 dxe5 fxe5 Nc6 Nf3 Bg4 e6 fxe6 c5 * [ECO "B03"] [Opening "Alekhine's defence"] [Variation "four pawns attack, 7.Be3"] e4 Nf6 e5 Nd5 d4 d6 c4 Nb6 f4 dxe5 fxe5 Nc6 Be3 * [ECO "B03"] [Opening "Alekhine's defence"] [Variation "four pawns attack, Tartakower variation"] e4 Nf6 e5 Nd5 d4 d6 c4 Nb6 f4 dxe5 fxe5 Nc6 Be3 Bf5 Nc3 e6 Nf3 Qd7 Be2 O-O-O O-O Be7 * [ECO "B03"] [Opening "Alekhine's defence"] [Variation "four pawns attack, Planinc variation"] e4 Nf6 e5 Nd5 d4 d6 c4 Nb6 f4 g5 * [ECO "B03"] [Opening "Alekhine's defence"] [Variation "four pawns attack, fianchetto variation"] e4 Nf6 e5 Nd5 d4 d6 c4 Nb6 f4 g6 * [ECO "B03"] [Opening "Alekhine's defence"] [Variation "four pawns attack, Trifunovic variation"] e4 Nf6 e5 Nd5 d4 d6 c4 Nb6 f4 Bf5 * [ECO "B04"] [Opening "Alekhine's defence"] [Variation "modern variation"] e4 Nf6 e5 Nd5 d4 d6 Nf3 * [ECO "B04"] [Opening "Alekhine's defence"] [Variation "modern, Larsen variation"] e4 Nf6 e5 Nd5 d4 d6 Nf3 dxe5 * [ECO "B04"] [Opening "Alekhine's defence"] [Variation "modern, Schmid variation"] e4 Nf6 e5 Nd5 d4 d6 Nf3 Nb6 * [ECO "B04"] [Opening "Alekhine's defence"] [Variation "modern, fianchetto variation"] e4 Nf6 e5 Nd5 d4 d6 Nf3 g6 * [ECO "B04"] [Opening "Alekhine's defence"] [Variation "modern, Keres variation"] e4 Nf6 e5 Nd5 d4 d6 Nf3 g6 Bc4 Nb6 Bb3 Bg7 a4 * [ECO "B05"] [Opening "Alekhine's defence"] [Variation "modern variation, 4...Bg4"] e4 Nf6 e5 Nd5 d4 d6 Nf3 Bg4 * [ECO "B05"] [Opening "Alekhine's defence"] [Variation "modern, Flohr variation"] e4 Nf6 e5 Nd5 d4 d6 Nf3 Bg4 Be2 c6 * [ECO "B05"] [Opening "Alekhine's defence"] [Variation "modern, Panov variation"] e4 Nf6 e5 Nd5 d4 d6 Nf3 Bg4 h3 * [ECO "B05"] [Opening "Alekhine's defence"] [Variation "modern, Alekhine variation"] e4 Nf6 e5 Nd5 d4 d6 Nf3 Bg4 c4 * [ECO "B05"] [Opening "Alekhine's defence"] [Variation "modern, Vitolins attack"] e4 Nf6 e5 Nd5 d4 d6 Nf3 Bg4 c4 Nb6 d5 * [ECO "B06"] [Opening "Robatsch (modern) defence"] e4 g6 * [ECO "B06"] [Opening "Norwegian defence"] e4 g6 d4 Nf6 e5 Nh5 g4 Ng7 * [ECO "B06"] [Opening "Robatsch (modern) defence"] e4 g6 d4 Bg7 * [ECO "B06"] [Opening "Robatsch defence"] [Variation "three pawns attack"] e4 g6 d4 Bg7 f4 * [ECO "B06"] [Opening "Robatsch defence"] e4 g6 d4 Bg7 Nc3 * [ECO "B06"] [Opening "Robatsch defence"] [Variation "Gurgenidze variation"] e4 g6 d4 Bg7 Nc3 c6 f4 d5 e5 h5 * [ECO "B06"] [Opening "Robatsch (modern) defence"] e4 g6 d4 Bg7 Nc3 d6 * [ECO "B06"] [Opening "Robatsch defence"] [Variation "two knights variation"] e4 g6 d4 Bg7 Nc3 d6 Nf3 * [ECO "B06"] [Opening "Robatsch defence"] [Variation "two knights, Suttles variation"] e4 g6 d4 Bg7 Nc3 d6 Nf3 c6 * [ECO "B06"] [Opening "Robatsch defence"] [Variation "Pseudo-Austrian attack"] e4 g6 d4 Bg7 Nc3 d6 f4 * [ECO "B07"] [Opening "Pirc defence"] e4 d6 d4 Nf6 Nc3 * [ECO "B07"] [Opening "Pirc"] [Variation "Ufimtsev-Pytel variation"] e4 d6 d4 Nf6 Nc3 c6 * [ECO "B07"] [Opening "Pirc defence"] e4 d6 d4 Nf6 Nc3 g6 * [ECO "B07"] [Opening "Pirc"] [Variation "150 attack"] e4 d6 d4 Nf6 Nc3 g6 Be3 c6 Qd2 * [ECO "B07"] [Opening "Pirc"] [Variation "Sveshnikov system"] e4 d6 d4 Nf6 Nc3 g6 g3 * [ECO "B07"] [Opening "Pirc"] [Variation "Holmov system"] e4 d6 d4 Nf6 Nc3 g6 Bc4 * [ECO "B07"] [Opening "Pirc"] [Variation "Byrne variation"] e4 d6 d4 Nf6 Nc3 g6 Bg5 * [ECO "B07"] [Opening "Pirc defence"] e4 d6 d4 Nf6 Nc3 g6 Be2 * [ECO "B07"] [Opening "Pirc"] [Variation "Chinese variation"] e4 d6 d4 Nf6 Nc3 g6 Be2 Bg7 g4 * [ECO "B07"] [Opening "Pirc"] [Variation "bayonet (Mariotti) attack"] e4 d6 d4 Nf6 Nc3 g6 Be2 Bg7 h4 * [ECO "B07"] [Opening "Robatsch defence"] [Variation "Geller's system"] e4 g6 d4 Bg7 Nf3 d6 c3 * [ECO "B08"] [Opening "Pirc"] [Variation "classical (two knights) system"] e4 d6 d4 Nf6 Nc3 g6 Nf3 * [ECO "B08"] [Opening "Pirc"] [Variation "classical (two knights) system"] e4 d6 d4 Nf6 Nc3 g6 Nf3 Bg7 * [ECO "B08"] [Opening "Pirc"] [Variation "classical, h3 system"] e4 d6 d4 Nf6 Nc3 g6 Nf3 Bg7 h3 * [ECO "B08"] [Opening "Pirc"] [Variation "classical system, 5.Be2"] e4 d6 d4 Nf6 Nc3 g6 Nf3 Bg7 Be2 * [ECO "B09"] [Opening "Pirc"] [Variation "Austrian attack"] e4 d6 d4 Nf6 Nc3 g6 f4 * [ECO "B09"] [Opening "Pirc"] [Variation "Austrian attack"] e4 d6 d4 Nf6 Nc3 g6 f4 Bg7 Nf3 O-O * [ECO "B09"] [Opening "Pirc"] [Variation "Austrian attack, 6.e5"] e4 d6 d4 Nf6 Nc3 g6 f4 Bg7 Nf3 O-O e5 * [ECO "B09"] [Opening "Pirc"] [Variation "Austrian attack, 6.Be3"] e4 d6 d4 Nf6 Nc3 g6 f4 Bg7 Nf3 O-O Be3 * [ECO "B09"] [Opening "Pirc"] [Variation "Austrian attack, 6.Bd3"] e4 d6 d4 Nf6 Nc3 g6 f4 Bg7 Nf3 O-O Bd3 * [ECO "B09"] [Opening "Pirc"] [Variation "Austrian attack, dragon formation"] e4 d6 d4 Nf6 Nc3 g6 f4 Bg7 Nf3 c5 * [ECO "B09"] [Opening "Pirc"] [Variation "Austrian attack, Ljubojevic variation"] e4 d6 d4 Nf6 Nc3 g6 f4 Bg7 Bc4 * [ECO "B10"] [Opening "Caro-Kann defence"] e4 c6 * [ECO "B10"] [Opening "Caro-Kann"] [Variation "Hillbilly attack"] e4 c6 Bc4 * [ECO "B10"] [Opening "Caro-Kann"] [Variation "anti-Caro-Kann defence"] e4 c6 c4 * [ECO "B10"] [Opening "Caro-Kann"] [Variation "anti-anti-Caro-Kann defence"] e4 c6 c4 d5 * [ECO "B10"] [Opening "Caro-Kann"] [Variation "closed (Breyer) variation"] e4 c6 d3 * [ECO "B10"] [Opening "Caro-Kann defence"] e4 c6 Nc3 * [ECO "B10"] [Opening "Caro-Kann"] [Variation "Goldman (Spielmann) variation"] e4 c6 Nc3 d5 Qf3 * [ECO "B10"] [Opening "Caro-Kann"] [Variation "two knights variation"] e4 c6 Nc3 d5 Nf3 * [ECO "B11"] [Opening "Caro-Kann"] [Variation "two knights, 3...Bg4"] e4 c6 Nc3 d5 Nf3 Bg4 * [ECO "B12"] [Opening "Caro-Kann defence"] e4 c6 d4 * [ECO "B12"] [Opening "de Bruycker defence"] e4 c6 d4 Na6 Nc3 Nc7 * [ECO "B12"] [Opening "Caro-Masi defence"] e4 c6 d4 Nf6 * [ECO "B12"] [Opening "Caro-Kann defence"] e4 c6 d4 d5 * [ECO "B12"] [Opening "Caro-Kann"] [Variation "Tartakower (fantasy) variation"] e4 c6 d4 d5 f3 * [ECO "B12"] [Opening "Caro-Kann"] [Variation "3.Nd2"] e4 c6 d4 d5 Nd2 * [ECO "B12"] [Opening "Caro-Kann"] [Variation "Edinburgh variation"] e4 c6 d4 d5 Nd2 Qb6 * [ECO "B12"] [Opening "Caro-Kann"] [Variation "advance variation"] e4 c6 d4 d5 e5 * [ECO "B12"] [Opening "Caro-Kann"] [Variation "advance, Short variation"] e4 c6 d4 d5 e5 Bf5 c3 e6 Be2 * [ECO "B13"] [Opening "Caro-Kann"] [Variation "exchange variation"] e4 c6 d4 d5 exd5 * [ECO "B13"] [Opening "Caro-Kann"] [Variation "exchange, Rubinstein variation"] e4 c6 d4 d5 exd5 cxd5 Bd3 Nc6 c3 Nf6 Bf4 * [ECO "B13"] [Opening "Caro-Kann"] [Variation "Panov-Botvinnik attack"] e4 c6 d4 d5 exd5 cxd5 c4 * [ECO "B13"] [Opening "Caro-Kann"] [Variation "Panov-Botvinnik, Gunderam attack"] e4 c6 d4 d5 exd5 cxd5 c4 Nf6 c5 * [ECO "B13"] [Opening "Caro-Kann"] [Variation "Panov-Botvinnik attack"] e4 c6 d4 d5 exd5 cxd5 c4 Nf6 Nc3 * [ECO "B13"] [Opening "Caro-Kann"] [Variation "Panov-Botvinnik, Herzog defence"] e4 c6 d4 d5 exd5 cxd5 c4 Nf6 Nc3 Nc6 Bg5 dxc4 d5 Na5 * [ECO "B13"] [Opening "Caro-Kann"] [Variation "Panov-Botvinnik, normal variation"] e4 c6 d4 d5 exd5 cxd5 c4 Nf6 Nc3 Nc6 Bg5 e6 * [ECO "B13"] [Opening "Caro-Kann"] [Variation "Panov-Botvinnik, Czerniak variation"] e4 c6 d4 d5 exd5 cxd5 c4 Nf6 Nc3 Nc6 Bg5 Qa5 * [ECO "B13"] [Opening "Caro-Kann"] [Variation "Panov-Botvinnik, Reifir (Spielmann) variation"] e4 c6 d4 d5 exd5 cxd5 c4 Nf6 Nc3 Nc6 Bg5 Qb6 * [ECO "B14"] [Opening "Caro-Kann"] [Variation "Panov-Botvinnik attack, 5...e6"] e4 c6 d4 d5 exd5 cxd5 c4 Nf6 Nc3 e6 * [ECO "B14"] [Opening "Caro-Kann"] [Variation "Panov-Botvinnik attack, 5...g6"] e4 c6 d4 d5 exd5 cxd5 c4 Nf6 Nc3 g6 * [ECO "B15"] [Opening "Caro-Kann defence"] e4 c6 d4 d5 Nc3 * [ECO "B15"] [Opening "Caro-Kann"] [Variation "Gurgenidze counter-attack"] e4 c6 d4 d5 Nc3 b5 * [ECO "B15"] [Opening "Caro-Kann"] [Variation "Gurgenidze system"] e4 c6 d4 d5 Nc3 g6 * [ECO "B15"] [Opening "Caro-Kann"] [Variation "Rasa-Studier gambit"] e4 c6 d4 d5 Nc3 dxe4 f3 * [ECO "B15"] [Opening "Caro-Kann defence"] e4 c6 d4 d5 Nc3 dxe4 Nxe4 * [ECO "B15"] [Opening "Caro-Kann"] [Variation "Alekhine gambit"] e4 c6 d4 d5 Nc3 dxe4 Nxe4 Nf6 Bd3 * [ECO "B15"] [Opening "Caro-Kann"] [Variation "Tartakower (Nimzovich) variation"] e4 c6 d4 d5 Nc3 dxe4 Nxe4 Nf6 Nxf6+ exf6 * [ECO "B15"] [Opening "Caro-Kann"] [Variation "Forgacs variation"] e4 c6 d4 d5 Nc3 dxe4 Nxe4 Nf6 Nxf6+ exf6 Bc4 * [ECO "B16"] [Opening "Caro-Kann"] [Variation "Bronstein-Larsen variation"] e4 c6 d4 d5 Nc3 dxe4 Nxe4 Nf6 Nxf6+ gxf6 * [ECO "B17"] [Opening "Caro-Kann"] [Variation "Steinitz variation"] e4 c6 d4 d5 Nc3 dxe4 Nxe4 Nd7 * [ECO "B18"] [Opening "Caro-Kann"] [Variation "classical variation"] e4 c6 d4 d5 Nc3 dxe4 Nxe4 Bf5 * [ECO "B18"] [Opening "Caro-Kann"] [Variation "classical, Flohr variation"] e4 c6 d4 d5 Nc3 dxe4 Nxe4 Bf5 Ng3 Bg6 Nh3 * [ECO "B18"] [Opening "Caro-Kann"] [Variation "classical, Maroczy attack"] e4 c6 d4 d5 Nc3 dxe4 Nxe4 Bf5 Ng3 Bg6 f4 * [ECO "B18"] [Opening "Caro-Kann"] [Variation "classical, 6.h4"] e4 c6 d4 d5 Nc3 dxe4 Nxe4 Bf5 Ng3 Bg6 h4 * [ECO "B19"] [Opening "Caro-Kann"] [Variation "classical, 7...Nd7"] e4 c6 d4 d5 Nc3 dxe4 Nxe4 Bf5 Ng3 Bg6 h4 h6 Nf3 Nd7 * [ECO "B19"] [Opening "Caro-Kann"] [Variation "classical, Spassky variation"] e4 c6 d4 d5 Nc3 dxe4 Nxe4 Bf5 Ng3 Bg6 h4 h6 Nf3 Nd7 h5 * [ECO "B20"] [Opening "Sicilian defence"] e4 c5 * [ECO "B20"] [Opening "Sicilian"] [Variation "Gloria variation"] e4 c5 c4 d6 Nc3 Nc6 g3 h5 * [ECO "B20"] [Opening "Sicilian"] [Variation "Steinitz variation"] e4 c5 g3 * [ECO "B20"] [Opening "Sicilian"] [Variation "wing gambit"] e4 c5 b4 * [ECO "B20"] [Opening "Sicilian"] [Variation "wing gambit, Santasiere variation"] e4 c5 b4 cxb4 c4 * [ECO "B20"] [Opening "Sicilian"] [Variation "wing gambit, Marshall variation"] e4 c5 b4 cxb4 a3 * [ECO "B20"] [Opening "Sicilian"] [Variation "wing gambit, Marienbad variation"] e4 c5 b4 cxb4 a3 d5 exd5 Qxd5 Bb2 * [ECO "B20"] [Opening "Sicilian"] [Variation "wing gambit, Carlsbad variation"] e4 c5 b4 cxb4 a3 bxa3 * [ECO "B20"] [Opening "Sicilian"] [Variation "Keres variation (2.Ne2)"] e4 c5 Ne2 * [ECO "B21"] [Opening "Sicilian"] [Variation "Grand Prix attack"] e4 c5 f4 * [ECO "B21"] [Opening "Sicilian"] [Variation "Smith-Morra gambit"] e4 c5 d4 * [ECO "B21"] [Opening "Sicilian"] [Variation "Andreaschek gambit"] e4 c5 d4 cxd4 Nf3 e5 c3 * [ECO "B21"] [Opening "Sicilian"] [Variation "Smith-Morra gambit"] e4 c5 d4 cxd4 c3 * [ECO "B21"] [Opening "Sicilian"] [Variation "Smith-Morra gambit, Chicago defence"] e4 c5 d4 cxd4 c3 dxc3 Nxc3 Nc6 Nf3 d6 Bc4 e6 O-O a6 Qe2 b5 Bb3 Ra7 * [ECO "B22"] [Opening "Sicilian"] [Variation "Alapin's variation (2.c3)"] e4 c5 c3 * [ECO "B22"] [Opening "Sicilian"] [Variation "2.c3, Heidenfeld variation"] e4 c5 c3 Nf6 e5 Nd5 Nf3 Nc6 Na3 * [ECO "B23"] [Opening "Sicilian"] [Variation "closed"] e4 c5 Nc3 * [ECO "B23"] [Opening "Sicilian"] [Variation "closed, Korchnoi variation"] e4 c5 Nc3 e6 g3 d5 * [ECO "B23"] [Opening "Sicilian"] [Variation "closed, 2...Nc6"] e4 c5 Nc3 Nc6 * [ECO "B23"] [Opening "Sicilian"] [Variation "chameleon variation"] e4 c5 Nc3 Nc6 Nge2 * [ECO "B23"] [Opening "Sicilian"] [Variation "Grand Prix attack"] e4 c5 Nc3 Nc6 f4 * [ECO "B23"] [Opening "Sicilian"] [Variation "Grand Prix attack, Schofman variation"] e4 c5 Nc3 Nc6 f4 g6 Nf3 Bg7 Bc4 e6 f5 * [ECO "B24"] [Opening "Sicilian"] [Variation "closed"] e4 c5 Nc3 Nc6 g3 * [ECO "B24"] [Opening "Sicilian"] [Variation "closed, Smyslov variation"] e4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 d3 e6 Be3 Nd4 Nce2 * [ECO "B25"] [Opening "Sicilian"] [Variation "closed"] e4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 d3 d6 * [ECO "B25"] [Opening "Sicilian"] [Variation "closed, 6.Ne2 e5 (Botvinnik)"] e4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 d3 d6 Nge2 e5 * [ECO "B25"] [Opening "Sicilian"] [Variation "closed, 6.f4"] e4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 d3 d6 f4 * [ECO "B25"] [Opening "Sicilian"] [Variation "closed, 6.f4 e5 (Botvinnik)"] e4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 d3 d6 f4 e5 * [ECO "B26"] [Opening "Sicilian"] [Variation "closed, 6.Be3"] e4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 d3 d6 Be3 * [ECO "B27"] [Opening "Sicilian defence"] e4 c5 Nf3 * [ECO "B27"] [Opening "Sicilian"] [Variation "Stiletto (Althouse) variation"] e4 c5 Nf3 Qa5 * [ECO "B27"] [Opening "Sicilian"] [Variation "Quinteros variation"] e4 c5 Nf3 Qc7 * [ECO "B27"] [Opening "Sicilian"] [Variation "Katalimov variation"] e4 c5 Nf3 b6 * [ECO "B27"] [Opening "Sicilian"] [Variation "Hungarian variation"] e4 c5 Nf3 g6 * [ECO "B27"] [Opening "Sicilian"] [Variation "Acton extension"] e4 c5 Nf3 g6 c4 Bh6 * [ECO "B28"] [Opening "Sicilian"] [Variation "O'Kelly variation"] e4 c5 Nf3 a6 * [ECO "B29"] [Opening "Sicilian"] [Variation "Nimzovich-Rubinstein variation"] e4 c5 Nf3 Nf6 * [ECO "B29"] [Opening "Sicilian"] [Variation "Nimzovich-Rubinstein; Rubinstein counter-gambit"] e4 c5 Nf3 Nf6 e5 Nd5 Nc3 e6 Nxd5 exd5 d4 Nc6 * [ECO "B30"] [Opening "Sicilian defence"] e4 c5 Nf3 Nc6 * [ECO "B30"] [Opening "Sicilian"] [Variation "Nimzovich-Rossolimo attack (without ...d6)"] e4 c5 Nf3 Nc6 Bb5 * [ECO "B31"] [Opening "Sicilian"] [Variation "Nimzovich-Rossolimo attack (with ...g6, without ...d6)"] e4 c5 Nf3 Nc6 Bb5 g6 * [ECO "B31"] [Opening "Sicilian"] [Variation "Nimzovich-Rossolimo attack, Gurgenidze variation"] e4 c5 Nf3 Nc6 Bb5 g6 O-O Bg7 Re1 e5 b4 * [ECO "B32"] [Opening "Sicilian defence"] e4 c5 Nf3 Nc6 d4 * [ECO "B32"] [Opening "Sicilian"] [Variation "Flohr variation"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Qc7 * [ECO "B32"] [Opening "Sicilian"] [Variation "Nimzovich variation"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 d5 * [ECO "B32"] [Opening "Sicilian"] [Variation "Labourdonnais-Loewenthal variation"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 e5 * [ECO "B32"] [Opening "Sicilian"] [Variation "Labourdonnais-Loewenthal (Kalashnikov) variation"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 e5 Nb5 d6 * [ECO "B33"] [Opening "Sicilian defence"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6 * [ECO "B33"] [Opening "Sicilian"] [Variation "Pelikan (Lasker/Sveshnikov) variation"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6 Nc3 e5 * [ECO "B33"] [Opening "Sicilian"] [Variation "Pelikan, Bird variation"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6 Nc3 e5 Ndb5 d6 Bg5 a6 Na3 Be6 * [ECO "B33"] [Opening "Sicilian"] [Variation "Pelikan, Chelyabinsk variation"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6 Nc3 e5 Ndb5 d6 Bg5 a6 Na3 b5 * [ECO "B33"] [Opening "Sicilian"] [Variation "Sveshnikov variation"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6 Nc3 e5 Ndb5 d6 Bg5 a6 Na3 b5 Bxf6 gxf6 Nd5 f5 * [ECO "B34"] [Opening "Sicilian"] [Variation "accelerated fianchetto, exchange variation"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 g6 Nxc6 * [ECO "B34"] [Opening "Sicilian"] [Variation "accelerated fianchetto, modern variation"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 g6 Nc3 * [ECO "B35"] [Opening "Sicilian"] [Variation "accelerated fianchetto, modern variation with Bc4"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 g6 Nc3 Bg7 Be3 Nf6 Bc4 * [ECO "B36"] [Opening "Sicilian"] [Variation "accelerated fianchetto, Maroczy bind"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 g6 c4 * [ECO "B36"] [Opening "Sicilian"] [Variation "accelerated fianchetto, Gurgenidze variation"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 g6 c4 Nf6 Nc3 Nxd4 Qxd4 d6 * [ECO "B37"] [Opening "Sicilian"] [Variation "accelerated fianchetto, Maroczy bind, 5...Bg7"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 g6 c4 Bg7 * [ECO "B37"] [Opening "Sicilian"] [Variation "accelerated fianchetto, Simagin variation"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 g6 c4 Bg7 Nc2 d6 Be2 Nh6 * [ECO "B38"] [Opening "Sicilian"] [Variation "accelerated fianchetto, Maroczy bind, 6.Be3"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 g6 c4 Bg7 Be3 * [ECO "B39"] [Opening "Sicilian"] [Variation "accelerated fianchetto, Breyer variation"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 g6 c4 Bg7 Be3 Nf6 Nc3 Ng4 * [ECO "B40"] [Opening "Sicilian defence"] e4 c5 Nf3 e6 * [ECO "B40"] [Opening "Sicilian"] [Variation "Marshall variation"] e4 c5 Nf3 e6 d4 d5 * [ECO "B40"] [Opening "Sicilian defence"] e4 c5 Nf3 e6 d4 cxd4 * [ECO "B40"] [Opening "Sicilian"] [Variation "Anderssen variation"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nf6 * [ECO "B40"] [Opening "Sicilian"] [Variation "Pin variation (Sicilian counter-attack)"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nf6 Nc3 Bb4 * [ECO "B40"] [Opening "Sicilian"] [Variation "Pin, Jaffe variation"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nf6 Nc3 Bb4 Bd3 e5 * [ECO "B40"] [Opening "Sicilian"] [Variation "Pin, Koch variation"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nf6 Nc3 Bb4 e5 * [ECO "B41"] [Opening "Sicilian"] [Variation "Kan variation"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 a6 * [ECO "B41"] [Opening "Sicilian"] [Variation "Kan, Maroczy bind (Reti variation)"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 a6 c4 * [ECO "B41"] [Opening "Sicilian"] [Variation "Kan, Maroczy bind - Bronstein variation"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 a6 c4 Nf6 Nc3 Bb4 Bd3 Nc6 Bc2 * [ECO "B42"] [Opening "Sicilian"] [Variation "Kan, 5.Bd3"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 a6 Bd3 * [ECO "B42"] [Opening "Sicilian"] [Variation "Kan, Gipslis variation"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 a6 Bd3 Nf6 O-O d6 c4 g6 * [ECO "B42"] [Opening "Sicilian"] [Variation "Kan, Polugaievsky variation"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 a6 Bd3 Bc5 * [ECO "B42"] [Opening "Sicilian"] [Variation "Kan, Swiss cheese variation"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 a6 Bd3 g6 * [ECO "B43"] [Opening "Sicilian"] [Variation "Kan, 5.Nc3"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 a6 Nc3 * [ECO "B44"] [Opening "Sicilian defence"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 * [ECO "B44"] [Opening "Sicilian, Szen (`anti-Taimanov') variation"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nb5 * [ECO "B44"] [Opening "Sicilian, Szen, hedgehog variation"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nb5 d6 c4 Nf6 N1c3 a6 Na3 Be7 Be2 O-O O-O b6 * [ECO "B44"] [Opening "Sicilian, Szen variation, Dely-Kasparov gambit"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nb5 d6 c4 Nf6 N1c3 a6 Na3 d5 * [ECO "B45"] [Opening "Sicilian"] [Variation "Taimanov variation"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nc3 * [ECO "B45"] [Opening "Sicilian"] [Variation "Taimanov, American attack"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nc3 Nf6 Ndb5 Bb4 Nd6+ * [ECO "B46"] [Opening "Sicilian"] [Variation "Taimanov variation"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nc3 a6 * [ECO "B47"] [Opening "Sicilian"] [Variation "Taimanov (Bastrikov) variation"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nc3 Qc7 * [ECO "B48"] [Opening "Sicilian"] [Variation "Taimanov variation"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nc3 Qc7 Be3 * [ECO "B49"] [Opening "Sicilian"] [Variation "Taimanov variation"] e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nc3 Qc7 Be3 a6 Be2 * [ECO "B50"] [Opening "Sicilian"] e4 c5 Nf3 d6 * [ECO "B50"] [Opening "Sicilian"] [Variation "wing gambit deferred"] e4 c5 Nf3 d6 b4 * [ECO "B51"] [Opening "Sicilian"] [Variation "Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack"] e4 c5 Nf3 d6 Bb5+ * [ECO "B52"] [Opening "Sicilian"] [Variation "Canal-Sokolsky attack, 3...Bd7"] e4 c5 Nf3 d6 Bb5+ Bd7 * [ECO "B52"] [Opening "Sicilian"] [Variation "Canal-Sokolsky attack, Bronstein gambit"] e4 c5 Nf3 d6 Bb5+ Bd7 Bxd7+ Qxd7 O-O Nc6 c3 Nf6 d4 * [ECO "B52"] [Opening "Sicilian"] [Variation "Canal-Sokolsky attack, Sokolsky variation"] e4 c5 Nf3 d6 Bb5+ Bd7 Bxd7+ Qxd7 c4 * [ECO "B53"] [Opening "Sicilian, Chekhover variation"] e4 c5 Nf3 d6 d4 cxd4 Qxd4 * [ECO "B53"] [Opening "Sicilian"] [Variation "Chekhover, Zaitsev variation"] e4 c5 Nf3 d6 d4 cxd4 Qxd4 Nc6 Bb5 Qd7 * [ECO "B54"] [Opening "Sicilian"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 * [ECO "B54"] [Opening "Sicilian"] [Variation "Prins (Moscow) variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 f3 * [ECO "B55"] [Opening "Sicilian"] [Variation "Prins variation, Venice attack"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 f3 e5 Bb5+ * [ECO "B56"] [Opening "Sicilian"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 * [ECO "B56"] [Opening "Sicilian"] [Variation "Venice attack"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e5 Bb5+ * [ECO "B56"] [Opening "Sicilian"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 * [ECO "B57"] [Opening "Sicilian"] [Variation "Sozin, not Scheveningen"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bc4 * [ECO "B57"] [Opening "Sicilian"] [Variation "Magnus Smith trap"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bc4 g6 Nxc6 bxc6 e5 * [ECO "B57"] [Opening "Sicilian"] [Variation "Sozin, Benko variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bc4 Qb6 * [ECO "B58"] [Opening "Sicilian"] [Variation "classical"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6 Nc3 d6 Be2 * [ECO "B58"] [Opening "Sicilian"] [Variation "Boleslavsky variation"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6 Nc3 d6 Be2 e5 * [ECO "B58"] [Opening "Sicilian"] [Variation "Boleslavsky, Louma variation"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6 Nc3 d6 Be2 e5 Nxc6 * [ECO "B59"] [Opening "Sicilian"] [Variation "Boleslavsky variation, 7.Nb3"] e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6 Nc3 d6 Be2 e5 Nb3 * [ECO "B60"] [Opening "Sicilian"] [Variation "Richter-Rauzer"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 * [ECO "B60"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Bondarevsky variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 g6 * [ECO "B60"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Larsen variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 Bd7 * [ECO "B61"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Larsen variation, 7.Qd2"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 Bd7 Qd2 * [ECO "B62"] [Opening "Sicilian"] [Variation "Richter-Rauzer, 6...e6"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 * [ECO "B62"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Podvebrady variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Nb3 * [ECO "B62"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Margate (Alekhine) variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Bb5 * [ECO "B62"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Richter attack"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Nxc6 * [ECO "B62"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Keres variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd3 * [ECO "B63"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Rauzer attack"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2 * [ECO "B63"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Rauzer attack, 7...Be7"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2 Be7 * [ECO "B64"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f4"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2 Be7 O-O-O O-O f4 * [ECO "B64"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Rauzer attack, Geller variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2 Be7 O-O-O O-O f4 e5 * [ECO "B65"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd4"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2 Be7 O-O-O O-O f4 Nxd4 * [ECO "B65"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd4"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2 Be7 O-O-O O-O f4 Nxd4 Qxd4 * [ECO "B66"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Rauzer attack, 7...a6"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2 a6 * [ECO "B67"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2 a6 O-O-O Bd7 * [ECO "B68"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be7"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2 a6 O-O-O Bd7 f4 Be7 * [ECO "B69"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf6"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2 a6 O-O-O Bd7 f4 Be7 Nf3 b5 Bxf6 * [ECO "B70"] [Opening "Sicilian"] [Variation "dragon variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 * [ECO "B71"] [Opening "Sicilian"] [Variation "dragon, Levenfish variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 f4 * [ECO "B71"] [Opening "Sicilian"] [Variation "dragon, Levenfish; Flohr variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 f4 Nbd7 * [ECO "B72"] [Opening "Sicilian"] [Variation "dragon, 6.Be3"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 * [ECO "B72"] [Opening "Sicilian"] [Variation "dragon, classical attack"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 * [ECO "B72"] [Opening "Sicilian"] [Variation "dragon, classical, Amsterdam variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 Qd2 * [ECO "B72"] [Opening "Sicilian"] [Variation "dragon, classical, Grigoriev variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 Qd2 O-O O-O-O * [ECO "B72"] [Opening "Sicilian"] [Variation "dragon, classical, Nottingham variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 Nb3 * [ECO "B73"] [Opening "Sicilian"] [Variation "dragon, classical, 8.O-O"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 O-O * [ECO "B73"] [Opening "Sicilian"] [Variation "dragon, classical, Zollner gambit"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 O-O O-O f4 Qb6 e5 * [ECO "B73"] [Opening "Sicilian"] [Variation "dragon, classical, Richter variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 O-O O-O Qd2 * [ECO "B74"] [Opening "Sicilian"] [Variation "dragon, classical, 9.Nb3"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 O-O O-O Nb3 * [ECO "B74"] [Opening "Sicilian"] [Variation "dragon, classical, Stockholm attack"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 O-O O-O Nb3 Be6 f4 Na5 f5 Bc4 Nxa5 Bxe2 Qxe2 Qxa5 g4 * [ECO "B74"] [Opening "Sicilian"] [Variation "dragon, classical, Spielmann variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 O-O O-O Nb3 Be6 f4 Na5 f5 Bc4 Bd3 * [ECO "B74"] [Opening "Sicilian"] [Variation "dragon, classical, Bernard defence"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 O-O O-O Nb3 Be6 f4 Na5 f5 Bc4 Bd3 Bxd3 cxd3 d5 * [ECO "B74"] [Opening "Sicilian"] [Variation "dragon, classical, Reti-Tartakower variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 O-O O-O Nb3 Be6 f4 Qc8 * [ECO "B74"] [Opening "Sicilian"] [Variation "dragon, classical, Alekhine variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 O-O O-O Nb3 a5 * [ECO "B75"] [Opening "Sicilian"] [Variation "dragon, Yugoslav attack"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 f3 * [ECO "B76"] [Opening "Sicilian"] [Variation "dragon, Yugoslav attack, 7...O-O"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 f3 O-O * [ECO "B76"] [Opening "Sicilian"] [Variation "dragon, Yugoslav attack, Rauser variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 f3 O-O Qd2 Nc6 O-O-O * [ECO "B77"] [Opening "Sicilian"] [Variation "dragon, Yugoslav attack, 9.Bc4"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 f3 O-O Qd2 Nc6 Bc4 * [ECO "B77"] [Opening "Sicilian"] [Variation "dragon, Yugoslav attack, Byrne variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 f3 O-O Qd2 Nc6 Bc4 a5 * [ECO "B77"] [Opening "Sicilian"] [Variation "dragon, Yugoslav attack, 9...Bd7"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 f3 O-O Qd2 Nc6 Bc4 Bd7 * [ECO "B78"] [Opening "Sicilian"] [Variation "dragon, Yugoslav attack, 10.O-O-O"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 f3 O-O Qd2 Nc6 Bc4 Bd7 O-O-O * [ECO "B79"] [Opening "Sicilian"] [Variation "dragon, Yugoslav attack, 12.h4"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 f3 O-O Qd2 Nc6 Bc4 Bd7 O-O-O Qa5 Bb3 Rfc8 h4 * [ECO "B80"] [Opening "Sicilian"] [Variation "Scheveningen variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 * [ECO "B80"] [Opening "Sicilian"] [Variation "Scheveningen, English variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be3 a6 Qd2 * [ECO "B80"] [Opening "Sicilian"] [Variation "Scheveningen, Vitolins variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Bb5+ * [ECO "B80"] [Opening "Sicilian"] [Variation "Scheveningen, fianchetto variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 g3 * [ECO "B81"] [Opening "Sicilian"] [Variation "Scheveningen, Keres attack"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 g4 * [ECO "B82"] [Opening "Sicilian"] [Variation "Scheveningen, 6.f4"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 f4 * [ECO "B82"] [Opening "Sicilian"] [Variation "Scheveningen, Tal variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 f4 Nc6 Be3 Be7 Qf3 * [ECO "B83"] [Opening "Sicilian"] [Variation "Scheveningen, 6.Be2"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be2 * [ECO "B83"] [Opening "Sicilian"] [Variation "modern Scheveningen"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be2 Nc6 * [ECO "B83"] [Opening "Sicilian"] [Variation "modern Scheveningen, main line"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be2 Nc6 O-O Be7 Be3 O-O f4 * [ECO "B83"] [Opening "Sicilian"] [Variation "modern Scheveningen, main line with Nb3"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be2 Nc6 O-O Be7 Be3 O-O f4 Bd7 Nb3 * [ECO "B84"] [Opening "Sicilian"] [Variation "Scheveningen (Paulsen), classical variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be2 a6 * [ECO "B84"] [Opening "Sicilian"] [Variation "Scheveningen, classical, Nd7 system"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be2 a6 O-O Nbd7 * [ECO "B84"] [Opening "Sicilian"] [Variation "Scheveningen (Paulsen), classical variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be2 a6 O-O Qc7 * [ECO "B85"] [Opening "Sicilian"] [Variation "Scheveningen, classical variation with ...Qc7 and ...Nc6"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be2 a6 O-O Qc7 f4 Nc6 * [ECO "B85"] [Opening "Sicilian"] [Variation "Scheveningen, classical, Maroczy system"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be2 a6 O-O Qc7 f4 Nc6 Kh1 Be7 a4 * [ECO "B85"] [Opening "Sicilian"] [Variation "Scheveningen, classical"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be2 a6 O-O Qc7 f4 Nc6 Be3 * [ECO "B85"] [Opening "Sicilian"] [Variation "Scheveningen, classical main line"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be2 a6 O-O Qc7 f4 Nc6 Be3 Be7 Qe1 O-O * [ECO "B86"] [Opening "Sicilian"] [Variation "Sozin attack"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Bc4 * [ECO "B87"] [Opening "Sicilian"] [Variation "Sozin with ...a6 and ...b5"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Bc4 a6 Bb3 b5 * [ECO "B88"] [Opening "Sicilian"] [Variation "Sozin, Leonhardt variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Bc4 Nc6 * [ECO "B88"] [Opening "Sicilian"] [Variation "Sozin, Fischer variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Bc4 Nc6 Bb3 Be7 Be3 O-O f4 * [ECO "B89"] [Opening "Sicilian"] [Variation "Sozin, 7.Be3"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Bc4 Nc6 Be3 * [ECO "B89"] [Opening "Sicilian"] [Variation "Velimirovic attack"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Bc4 Nc6 Be3 Be7 Qe2 * [ECO "B90"] [Opening "Sicilian"] [Variation "Najdorf"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 * [ECO "B90"] [Opening "Sicilian"] [Variation "Najdorf, Adams attack"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 h3 * [ECO "B90"] [Opening "Sicilian"] [Variation "Najdorf, Lipnitzky attack"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bc4 * [ECO "B90"] [Opening "Sicilian"] [Variation "Najdorf, Byrne (English) attack"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Be3 * [ECO "B91"] [Opening "Sicilian"] [Variation "Najdorf, Zagreb (fianchetto) variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 g3 * [ECO "B92"] [Opening "Sicilian"] [Variation "Najdorf, Opovcensky variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Be2 * [ECO "B93"] [Opening "Sicilian"] [Variation "Najdorf, 6.f4"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 f4 * [ECO "B94"] [Opening "Sicilian"] [Variation "Najdorf, 6.Bg5"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 * [ECO "B94"] [Opening "Sicilian"] [Variation "Najdorf, Ivkov variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 Nbd7 Bc4 Qa5 Qd2 e6 O-O-O b5 Bb3 Bb7 Rhe1 Nc5 e5 * [ECO "B95"] [Opening "Sicilian"] [Variation "Najdorf, 6...e6"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 * [ECO "B96"] [Opening "Sicilian"] [Variation "Najdorf, 7.f4"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 * [ECO "B96"] [Opening "Sicilian"] [Variation "Najdorf, Polugayevsky variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 b5 * [ECO "B96"] [Opening "Sicilian"] [Variation "Najdorf, Polugayevsky, Simagin variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 b5 e5 dxe5 fxe5 Qc7 Qe2 * [ECO "B97"] [Opening "Sicilian"] [Variation "Najdorf, 7...Qb6"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 Qb6 * [ECO "B97"] [Opening "Sicilian"] [Variation "Najdorf, Poisoned pawn variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 Qb6 Qd2 Qxb2 Rb1 Qa3 * [ECO "B98"] [Opening "Sicilian"] [Variation "Najdorf, 7...Be7"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 Be7 * [ECO "B98"] [Opening "Sicilian"] [Variation "Najdorf, Browne variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 Be7 Qf3 h6 Bh4 Qc7 * [ECO "B98"] [Opening "Sicilian"] [Variation "Najdorf, Goteborg (Argentine) variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 Be7 Qf3 h6 Bh4 g5 * [ECO "B98"] [Opening "Sicilian"] [Variation "Najdorf variation"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 Be7 Qf3 Qc7 * [ECO "B99"] [Opening "Sicilian"] [Variation "Najdorf, 7...Be7 main line"] e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 Be7 Qf3 Qc7 O-O-O Nbd7 * [ECO "C00"] [Opening "French defence"] e4 e6 * [ECO "C00"] [Opening "French defence, Steiner variation"] e4 e6 c4 * [ECO "C00"] [Opening "French"] [Variation "Reti (Spielmann) variation"] e4 e6 b3 * [ECO "C00"] [Opening "French"] [Variation "Steinitz attack"] e4 e6 e5 * [ECO "C00"] [Opening "French"] [Variation "Labourdonnais variation"] e4 e6 f4 * [ECO "C00"] [Opening "French defence"] e4 e6 Nf3 * [ECO "C00"] [Opening "French"] [Variation "Wing gambit"] e4 e6 Nf3 d5 e5 c5 b4 * [ECO "C00"] [Opening "French defence"] e4 e6 Nc3 * [ECO "C00"] [Opening "French"] [Variation "Pelikan variation"] e4 e6 Nc3 d5 f4 * [ECO "C00"] [Opening "French"] [Variation "Two knights variation"] e4 e6 Nc3 d5 Nf3 * [ECO "C00"] [Opening "French"] [Variation "Chigorin variation"] e4 e6 Qe2 * [ECO "C00"] [Opening "French"] [Variation "King's Indian attack"] e4 e6 d3 * [ECO "C00"] [Opening "French"] [Variation "Reversed Philidor formation"] e4 e6 d3 d5 Nd2 Nf6 Ngf3 Nc6 Be2 * [ECO "C00"] [Opening "French defence"] e4 e6 d4 * [ECO "C00"] [Opening "Lengfellner system"] e4 e6 d4 d6 * [ECO "C00"] [Opening "St. George defence"] e4 e6 d4 a6 * [ECO "C00"] [Opening "French defence"] e4 e6 d4 d5 * [ECO "C00"] [Opening "French"] [Variation "Schlechter variation"] e4 e6 d4 d5 Bd3 * [ECO "C00"] [Opening "French"] [Variation "Alapin variation"] e4 e6 d4 d5 Be3 * [ECO "C01"] [Opening "French"] [Variation "exchange variation"] e4 e6 d4 d5 exd5 * [ECO "C01"] [Opening "French"] [Variation "exchange, Svenonius variation"] e4 e6 d4 d5 exd5 exd5 Nc3 Nf6 Bg5 * [ECO "C01"] [Opening "French"] [Variation "exchange, Bogolyubov variation"] e4 e6 d4 d5 exd5 exd5 Nc3 Nf6 Bg5 Nc6 * [ECO "C02"] [Opening "French"] [Variation "advance variation"] e4 e6 d4 d5 e5 * [ECO "C02"] [Opening "French"] [Variation "advance, Steinitz variation"] e4 e6 d4 d5 e5 c5 dxc5 * [ECO "C02"] [Opening "French"] [Variation "advance, Nimzovich variation"] e4 e6 d4 d5 e5 c5 Qg4 * [ECO "C02"] [Opening "French"] [Variation "advance, Nimzovich system"] e4 e6 d4 d5 e5 c5 Nf3 * [ECO "C02"] [Opening "French"] [Variation "advance variation"] e4 e6 d4 d5 e5 c5 c3 * [ECO "C02"] [Opening "French"] [Variation "advance, Wade variation"] e4 e6 d4 d5 e5 c5 c3 Qb6 Nf3 Bd7 * [ECO "C02"] [Opening "French"] [Variation "advance variation"] e4 e6 d4 d5 e5 c5 c3 Nc6 * [ECO "C02"] [Opening "French"] [Variation "advance, Paulsen attack"] e4 e6 d4 d5 e5 c5 c3 Nc6 Nf3 * [ECO "C02"] [Opening "French"] [Variation "advance, Milner-Barry gambit"] e4 e6 d4 d5 e5 c5 c3 Nc6 Nf3 Qb6 Bd3 * [ECO "C02"] [Opening "French"] [Variation "advance, Euwe variation"] e4 e6 d4 d5 e5 c5 c3 Nc6 Nf3 Bd7 * [ECO "C03"] [Opening "French"] [Variation "Tarrasch"] e4 e6 d4 d5 Nd2 * [ECO "C03"] [Opening "French"] [Variation "Tarrasch, Haberditz variation"] e4 e6 d4 d5 Nd2 f5 * [ECO "C03"] [Opening "French"] [Variation "Tarrasch, Guimard variation"] e4 e6 d4 d5 Nd2 Nc6 * [ECO "C04"] [Opening "French"] [Variation "Tarrasch, Guimard main line"] e4 e6 d4 d5 Nd2 Nc6 Ngf3 Nf6 * [ECO "C05"] [Opening "French"] [Variation "Tarrasch, closed variation"] e4 e6 d4 d5 Nd2 Nf6 * [ECO "C05"] [Opening "French"] [Variation "Tarrasch, Botvinnik variation"] e4 e6 d4 d5 Nd2 Nf6 e5 Nfd7 Bd3 c5 c3 b6 * [ECO "C05"] [Opening "French"] [Variation "Tarrasch, closed variation"] e4 e6 d4 d5 Nd2 Nf6 e5 Nfd7 Bd3 c5 c3 Nc6 * [ECO "C06"] [Opening "French"] [Variation "Tarrasch, closed variation, main line"] e4 e6 d4 d5 Nd2 Nf6 e5 Nfd7 Bd3 c5 c3 Nc6 Ne2 cxd4 cxd4 * [ECO "C06"] [Opening "French"] [Variation "Tarrasch, Leningrad variation"] e4 e6 d4 d5 Nd2 Nf6 e5 Nfd7 Bd3 c5 c3 Nc6 Ne2 cxd4 cxd4 Nb6 * [ECO "C07"] [Opening "French"] [Variation "Tarrasch, open variation"] e4 e6 d4 d5 Nd2 c5 * [ECO "C07"] [Opening "French"] [Variation "Tarrasch, Eliskases variation"] e4 e6 d4 d5 Nd2 c5 exd5 Qxd5 Ngf3 cxd4 Bc4 Qd8 * [ECO "C08"] [Opening "French"] [Variation "Tarrasch, open, 4.ed ed"] e4 e6 d4 d5 Nd2 c5 exd5 exd5 * [ECO "C09"] [Opening "French"] [Variation "Tarrasch, open variation, main line"] e4 e6 d4 d5 Nd2 c5 exd5 exd5 Ngf3 Nc6 * [ECO "C10"] [Opening "French"] [Variation "Paulsen variation"] e4 e6 d4 d5 Nc3 * [ECO "C10"] [Opening "French"] [Variation "Marshall variation"] e4 e6 d4 d5 Nc3 c5 * [ECO "C10"] [Opening "French"] [Variation "Rubinstein variation"] e4 e6 d4 d5 Nc3 dxe4 * [ECO "C10"] [Opening "French"] [Variation "Fort Knox variation"] e4 e6 d4 d5 Nc3 dxe4 Nxe4 Bd7 Nf3 Bc6 * [ECO "C10"] [Opening "French"] [Variation "Rubinstein variation"] e4 e6 d4 d5 Nc3 dxe4 Nxe4 Nd7 * [ECO "C10"] [Opening "French"] [Variation "Rubinstein, Capablanca line"] e4 e6 d4 d5 Nc3 dxe4 Nxe4 Nd7 Nf3 Ngf6 Nxf6+ Nxf6 Ne5 * [ECO "C10"] [Opening "French"] [Variation "Frere (Becker) variation"] e4 e6 d4 d5 Nc3 dxe4 Nxe4 Qd5 * [ECO "C11"] [Opening "French defence"] e4 e6 d4 d5 Nc3 Nf6 * [ECO "C11"] [Opening "French"] [Variation "Swiss variation"] e4 e6 d4 d5 Nc3 Nf6 Bd3 * [ECO "C11"] [Opening "French"] [Variation "Henneberger variation"] e4 e6 d4 d5 Nc3 Nf6 Be3 * [ECO "C11"] [Opening "French"] [Variation "Steinitz variation"] e4 e6 d4 d5 Nc3 Nf6 e5 * [ECO "C11"] [Opening "French"] [Variation "Steinitz, Bradford attack"] e4 e6 d4 d5 Nc3 Nf6 e5 Nfd7 f4 c5 dxc5 Bxc5 Qg4 * [ECO "C11"] [Opening "French"] [Variation "Steinitz variation"] e4 e6 d4 d5 Nc3 Nf6 e5 Nfd7 f4 c5 dxc5 Nc6 * [ECO "C11"] [Opening "French"] [Variation "Steinitz, Brodsky-Jones variation"] e4 e6 d4 d5 Nc3 Nf6 e5 Nfd7 f4 c5 dxc5 Nc6 a3 Bxc5 Qg4 O-O Nf3 f6 * [ECO "C11"] [Opening "French"] [Variation "Steinitz variation"] e4 e6 d4 d5 Nc3 Nf6 e5 Nfd7 f4 c5 Nf3 * [ECO "C11"] [Opening "French"] [Variation "Steinitz, Boleslavsky variation"] e4 e6 d4 d5 Nc3 Nf6 e5 Nfd7 f4 c5 Nf3 Nc6 Be3 * [ECO "C11"] [Opening "French"] [Variation "Steinitz, Gledhill attack"] e4 e6 d4 d5 Nc3 Nf6 e5 Nfd7 Qg4 * [ECO "C11"] [Opening "French"] [Variation "Burn variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 dxe4 * [ECO "C12"] [Opening "French"] [Variation "MacCutcheon variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 * [ECO "C12"] [Opening "French"] [Variation "MacCutcheon, Bogolyubov variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 exd5 Qxd5 Bxf6 gxf6 Qd2 Qa5 * [ECO "C12"] [Opening "French"] [Variation "MacCutcheon, advance variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 * [ECO "C12"] [Opening "French"] [Variation "MacCutcheon, Chigorin variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 h6 exf6 * [ECO "C12"] [Opening "French"] [Variation "MacCutcheon, Grigoriev variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 h6 exf6 hxg5 fxg7 Rg8 h4 gxh4 Qg4 * [ECO "C12"] [Opening "French"] [Variation "MacCutcheon, Bernstein variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 h6 Bh4 * [ECO "C12"] [Opening "French"] [Variation "MacCutcheon, Janowski variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 h6 Be3 * [ECO "C12"] [Opening "French"] [Variation "MacCutcheon, Dr. Olland (Dutch) variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 h6 Bc1 * [ECO "C12"] [Opening "French"] [Variation "MacCutcheon, Tartakower variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 h6 Bd2 Nfd7 * [ECO "C12"] [Opening "French"] [Variation "MacCutcheon, Lasker variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 h6 Bd2 Bxc3 * [ECO "C12"] [Opening "French"] [Variation "MacCutcheon, Duras variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 h6 Bd2 Bxc3 bxc3 Ne4 Qg4 Kf8 Bc1 * [ECO "C12"] [Opening "French"] [Variation "MacCutcheon, Lasker variation, 8...g6"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 h6 Bd2 Bxc3 bxc3 Ne4 Qg4 g6 * [ECO "C13"] [Opening "French"] [Variation "classical"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 * [ECO "C13"] [Opening "French"] [Variation "classical, Anderssen variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 Bxf6 * [ECO "C13"] [Opening "French"] [Variation "classical, Anderssen-Richter variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 Bxf6 Bxf6 e5 Be7 Qg4 * [ECO "C13"] [Opening "French"] [Variation "classical, Vistaneckis (Nimzovich) variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Ng8 * [ECO "C13"] [Opening "French"] [Variation "classical, Frankfurt variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Ng8 Be3 b6 * [ECO "C13"] [Opening "French"] [Variation "classical, Tartakower variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Ne4 * [ECO "C13"] [Opening "French"] [Variation "Albin-Alekhine-Chatard attack"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 h4 * [ECO "C13"] [Opening "French"] [Variation "Albin-Alekhine-Chatard attack, Maroczy variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 h4 a6 * [ECO "C13"] [Opening "French"] [Variation "Albin-Alekhine-Chatard attack, Breyer variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 h4 c5 * [ECO "C13"] [Opening "French"] [Variation "Albin-Alekhine-Chatard attack, Teichmann variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 h4 f6 * [ECO "C13"] [Opening "French"] [Variation "Albin-Alekhine-Chatard attack, Spielmann variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 h4 O-O * [ECO "C14"] [Opening "French"] [Variation "classical variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 Bxe7 Qxe7 * [ECO "C14"] [Opening "French"] [Variation "classical, Tarrasch variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 Bxe7 Qxe7 Bd3 * [ECO "C14"] [Opening "French"] [Variation "classical, Rubinstein variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 Bxe7 Qxe7 Qd2 * [ECO "C14"] [Opening "French"] [Variation "classical, Alapin variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 Bxe7 Qxe7 Nb5 * [ECO "C14"] [Opening "French"] [Variation "classical, Pollock variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 Bxe7 Qxe7 Qg4 * [ECO "C14"] [Opening "French"] [Variation "classical, Steinitz variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 Bxe7 Qxe7 f4 * [ECO "C14"] [Opening "French"] [Variation "classical, Stahlberg variation"] e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 Bxe7 Qxe7 f4 O-O Nf3 c5 Qd2 Nc6 O-O-O c4 * [ECO "C15"] [Opening "French"] [Variation "Winawer (Nimzovich) variation"] e4 e6 d4 d5 Nc3 Bb4 * [ECO "C15"] [Opening "French"] [Variation "Winawer, Kondratiyev variation"] e4 e6 d4 d5 Nc3 Bb4 Bd3 c5 exd5 Qxd5 Bd2 * [ECO "C15"] [Opening "French"] [Variation "Winawer, fingerslip variation"] e4 e6 d4 d5 Nc3 Bb4 Bd2 * [ECO "C15"] [Opening "French"] [Variation "Winawer, Alekhine (Maroczy) gambit"] e4 e6 d4 d5 Nc3 Bb4 Ne2 * [ECO "C15"] [Opening "French"] [Variation "Winawer, Alekhine gambit, Alatortsev variation"] e4 e6 d4 d5 Nc3 Bb4 Ne2 dxe4 a3 Be7 Nxe4 Nf6 N2g3 O-O Be2 Nc6 * [ECO "C15"] [Opening "French"] [Variation "Winawer, Alekhine gambit"] e4 e6 d4 d5 Nc3 Bb4 Ne2 dxe4 a3 Bxc3+ * [ECO "C15"] [Opening "French"] [Variation "Winawer, Alekhine gambit, Kan variation"] e4 e6 d4 d5 Nc3 Bb4 Ne2 dxe4 a3 Bxc3+ Nxc3 Nc6 * [ECO "C16"] [Opening "French"] [Variation "Winawer, advance variation"] e4 e6 d4 d5 Nc3 Bb4 e5 * [ECO "C16"] [Opening "French"] [Variation "Winawer, Petrosian variation"] e4 e6 d4 d5 Nc3 Bb4 e5 Qd7 * [ECO "C17"] [Opening "French"] [Variation "Winawer, advance variation"] e4 e6 d4 d5 Nc3 Bb4 e5 c5 * [ECO "C17"] [Opening "French"] [Variation "Winawer, advance, Bogolyubov variation"] e4 e6 d4 d5 Nc3 Bb4 e5 c5 Bd2 * [ECO "C17"] [Opening "French"] [Variation "Winawer, advance, Russian variation"] e4 e6 d4 d5 Nc3 Bb4 e5 c5 Qg4 * [ECO "C17"] [Opening "French"] [Variation "Winawer, advance, 5.a3"] e4 e6 d4 d5 Nc3 Bb4 e5 c5 a3 * [ECO "C17"] [Opening "French"] [Variation "Winawer, advance, Rauzer variation"] e4 e6 d4 d5 Nc3 Bb4 e5 c5 a3 cxd4 axb4 dxc3 Nf3 * [ECO "C18"] [Opening "French"] [Variation "Winawer, advance variation"] e4 e6 d4 d5 Nc3 Bb4 e5 c5 a3 Bxc3+ bxc3 * [ECO "C18"] [Opening "French"] [Variation "Winawer, classical variation"] e4 e6 d4 d5 Nc3 Bb4 e5 c5 a3 Bxc3+ bxc3 Qc7 * [ECO "C19"] [Opening "French"] [Variation "Winawer, advance, 6...Ne7"] e4 e6 d4 d5 Nc3 Bb4 e5 c5 a3 Bxc3+ bxc3 Ne7 * [ECO "C19"] [Opening "French"] [Variation "Winawer, advance, Smyslov variation"] e4 e6 d4 d5 Nc3 Bb4 e5 c5 a3 Bxc3+ bxc3 Ne7 a4 * [ECO "C19"] [Opening "French"] [Variation "Winawer, advance, positional main line"] e4 e6 d4 d5 Nc3 Bb4 e5 c5 a3 Bxc3+ bxc3 Ne7 Nf3 * [ECO "C19"] [Opening "French"] [Variation "Winawer, advance, poisoned pawn variation"] e4 e6 d4 d5 Nc3 Bb4 e5 c5 a3 Bxc3+ bxc3 Ne7 Qg4 * [ECO "C19"] [Opening "French"] [Variation "Winawer, advance, poisoned pawn, Euwe-Gligoric variation"] e4 e6 d4 d5 Nc3 Bb4 e5 c5 a3 Bxc3+ bxc3 Ne7 Qg4 Qc7 Qxg7 Rg8 Qxh7 cxd4 Kd1 * [ECO "C19"] [Opening "French"] [Variation "Winawer, advance, poisoned pawn, Konstantinopolsky variation"] e4 e6 d4 d5 Nc3 Bb4 e5 c5 a3 Bxc3+ bxc3 Ne7 Qg4 Qc7 Qxg7 Rg8 Qxh7 cxd4 Ne2 * [ECO "C20"] [Opening "King's pawn game"] e4 e5 * [ECO "C20"] [Opening "KP"] [Variation "Indian opening"] e4 e5 d3 * [ECO "C20"] [Opening "KP"] [Variation "Mengarini's opening"] e4 e5 a3 * [ECO "C20"] [Opening "KP"] [Variation "King's head opening"] e4 e5 f3 * [ECO "C20"] [Opening "KP"] [Variation "Patzer opening"] e4 e5 Qh5 * [ECO "C20"] [Opening "KP"] [Variation "Napoleon's opening"] e4 e5 Qf3 * [ECO "C20"] [Opening "KP"] [Variation "Lopez opening"] e4 e5 c3 * [ECO "C20"] [Opening "Alapin's opening"] e4 e5 Ne2 * [ECO "C21"] [Opening "Centre game"] e4 e5 d4 exd4 * [ECO "C21"] [Opening "Centre game, Kieseritsky variation"] e4 e5 d4 exd4 Nf3 c5 Bc4 b5 * [ECO "C21"] [Opening "Halasz gambit"] e4 e5 d4 exd4 f4 * [ECO "C21"] [Opening "Danish gambit"] e4 e5 d4 exd4 c3 * [ECO "C21"] [Opening "Danish gambit"] [Variation "Collijn defence"] e4 e5 d4 exd4 c3 dxc3 Bc4 cxb2 Bxb2 Qe7 * [ECO "C21"] [Opening "Danish gambit"] [Variation "Schlechter defence"] e4 e5 d4 exd4 c3 dxc3 Bc4 cxb2 Bxb2 d5 * [ECO "C21"] [Opening "Danish gambit"] [Variation "Soerensen defence"] e4 e5 d4 exd4 c3 d5 * [ECO "C21"] [Opening "Centre game"] e4 e5 d4 exd4 Qxd4 * [ECO "C22"] [Opening "Centre game"] e4 e5 d4 exd4 Qxd4 Nc6 * [ECO "C22"] [Opening "Centre game"] [Variation "Paulsen attack"] e4 e5 d4 exd4 Qxd4 Nc6 Qe3 * [ECO "C22"] [Opening "Centre game"] [Variation "Charousek variation"] e4 e5 d4 exd4 Qxd4 Nc6 Qe3 Bb4+ c3 Be7 * [ECO "C22"] [Opening "Centre game"] [Variation "l'Hermet variation"] e4 e5 d4 exd4 Qxd4 Nc6 Qe3 f5 * [ECO "C22"] [Opening "Centre game"] [Variation "Berger variation"] e4 e5 d4 exd4 Qxd4 Nc6 Qe3 Nf6 * [ECO "C22"] [Opening "Centre game"] [Variation "Kupreichik variation"] e4 e5 d4 exd4 Qxd4 Nc6 Qe3 Nf6 Nc3 Bb4 Bd2 O-O O-O-O Re8 Bc4 d6 Nh3 * [ECO "C22"] [Opening "Centre game"] [Variation "Hall variation"] e4 e5 d4 exd4 Qxd4 Nc6 Qc4 * [ECO "C23"] [Opening "Bishop's opening"] e4 e5 Bc4 * [ECO "C23"] [Opening "Bishop's opening"] [Variation "Philidor counter-attack"] e4 e5 Bc4 c6 * [ECO "C23"] [Opening "Bishop's opening"] [Variation "Lisitsyn variation"] e4 e5 Bc4 c6 d4 d5 exd5 cxd5 Bb5+ Bd7 Bxd7+ Nxd7 dxe5 Nxe5 Ne2 * [ECO "C23"] [Opening "Bishop's opening"] [Variation "Calabrese counter-gambit"] e4 e5 Bc4 f5 * [ECO "C23"] [Opening "Bishop's opening"] [Variation "Calabrese counter-gambit, Jaenisch variation"] e4 e5 Bc4 f5 d3 * [ECO "C23"] [Opening "Bishop's opening"] [Variation "Classical variation"] e4 e5 Bc4 Bc5 * [ECO "C23"] [Opening "Bishop's opening"] [Variation "Lopez gambit"] e4 e5 Bc4 Bc5 Qe2 Nc6 c3 Nf6 f4 * [ECO "C23"] [Opening "Bishop's opening"] [Variation "Philidor variation"] e4 e5 Bc4 Bc5 c3 * [ECO "C23"] [Opening "Bishop's opening"] [Variation "Pratt variation"] e4 e5 Bc4 Bc5 c3 Nf6 d4 exd4 e5 d5 exf6 dxc4 Qh5 O-O * [ECO "C23"] [Opening "Bishop's opening"] [Variation "Lewis counter-gambit"] e4 e5 Bc4 Bc5 c3 d5 * [ECO "C23"] [Opening "Bishop's opening"] [Variation "del Rio variation"] e4 e5 Bc4 Bc5 c3 Qg5 * [ECO "C23"] [Opening "Bishop's opening"] [Variation "Lewis gambit"] e4 e5 Bc4 Bc5 d4 * [ECO "C23"] [Opening "Bishop's opening"] [Variation "Wing gambit"] e4 e5 Bc4 Bc5 b4 * [ECO "C23"] [Opening "Bishop's opening"] [Variation "MacDonnell double gambit"] e4 e5 Bc4 Bc5 b4 Bxb4 f4 * [ECO "C23"] [Opening "Bishop's opening"] [Variation "Four pawns' gambit"] e4 e5 Bc4 Bc5 b4 Bxb4 f4 exf4 Nf3 Be7 d4 Bh4+ g3 fxg3 O-O gxh2+ Kh1 * [ECO "C24"] [Opening "Bishop's opening"] [Variation "Berlin defence"] e4 e5 Bc4 Nf6 * [ECO "C24"] [Opening "Bishop's opening"] [Variation "Greco gambit"] e4 e5 Bc4 Nf6 f4 * [ECO "C24"] [Opening "Bishop's opening"] [Variation "Ponziani gambit"] e4 e5 Bc4 Nf6 d4 * [ECO "C24"] [Opening "Bishop's opening"] [Variation "Urusov gambit"] e4 e5 Bc4 Nf6 d4 exd4 Nf3 * [ECO "C24"] [Opening "Bishop's opening"] [Variation "Urusov gambit, Panov variation"] e4 e5 Bc4 Nf6 d4 exd4 Nf3 d5 exd5 Bb4+ c3 Qe7+ * [ECO "C25"] [Opening "Vienna game"] e4 e5 Nc3 * [ECO "C25"] [Opening "Vienna"] [Variation "Zhuravlev countergambit"] e4 e5 Nc3 Bb4 Qg4 Nf6 * [ECO "C25"] [Opening "Vienna game, Max Lange defence"] e4 e5 Nc3 Nc6 * [ECO "C25"] [Opening "Vienna"] [Variation "Paulsen variation"] e4 e5 Nc3 Nc6 g3 * [ECO "C25"] [Opening "Vienna"] [Variation "Fyfe gambit"] e4 e5 Nc3 Nc6 d4 * [ECO "C25"] [Opening "Vienna gambit"] e4 e5 Nc3 Nc6 f4 * [ECO "C25"] [Opening "Vienna"] [Variation "Steinitz gambit"] e4 e5 Nc3 Nc6 f4 exf4 d4 * [ECO "C25"] [Opening "Vienna"] [Variation "Steinitz gambit, Zukertort defence"] e4 e5 Nc3 Nc6 f4 exf4 d4 Qh4+ Ke2 d5 * [ECO "C25"] [Opening "Vienna"] [Variation "Steinitz gambit, Fraser-Minckwitz variation"] e4 e5 Nc3 Nc6 f4 exf4 d4 Qh4+ Ke2 b6 * [ECO "C25"] [Opening "Vienna gambit"] e4 e5 Nc3 Nc6 f4 exf4 Nf3 * [ECO "C25"] [Opening "Vienna"] [Variation "Hamppe-Allgaier gambit"] e4 e5 Nc3 Nc6 f4 exf4 Nf3 g5 h4 g4 Ng5 * [ECO "C25"] [Opening "Vienna"] [Variation "Hamppe-Allgaier gambit, Alapin variation"] e4 e5 Nc3 Nc6 f4 exf4 Nf3 g5 h4 g4 Ng5 d6 * [ECO "C25"] [Opening "Vienna"] [Variation "Hamppe-Muzio gambit"] e4 e5 Nc3 Nc6 f4 exf4 Nf3 g5 Bc4 g4 O-O * [ECO "C25"] [Opening "Vienna"] [Variation "Hamppe-Muzio, Dubois variation"] e4 e5 Nc3 Nc6 f4 exf4 Nf3 g5 Bc4 g4 O-O gxf3 Qxf3 Ne5 Qxf4 Qf6 * [ECO "C25"] [Opening "Vienna"] [Variation "Pierce gambit"] e4 e5 Nc3 Nc6 f4 exf4 Nf3 g5 d4 * [ECO "C25"] [Opening "Vienna"] [Variation "Pierce gambit, Rushmere attack"] e4 e5 Nc3 Nc6 f4 exf4 Nf3 g5 d4 g4 Bc4 gxf3 O-O d5 exd5 Bg4 dxc6 * [ECO "C26"] [Opening "Vienna"] [Variation "Falkbeer variation"] e4 e5 Nc3 Nf6 * [ECO "C26"] [Opening "Vienna"] [Variation "Mengarini variation"] e4 e5 Nc3 Nf6 a3 * [ECO "C26"] [Opening "Vienna"] [Variation "Paulsen-Mieses variation"] e4 e5 Nc3 Nf6 g3 * [ECO "C26"] [Opening "Vienna game"] e4 e5 Nc3 Nf6 Bc4 * [ECO "C27"] [Opening "Vienna game"] e4 e5 Nc3 Nf6 Bc4 Nxe4 * [ECO "C27"] [Opening "Vienna"] [Variation "`Frankenstein-Dracula' variation"] e4 e5 Nc3 Nf6 Bc4 Nxe4 Qh5 Nd6 Bb3 Nc6 Nb5 g6 Qf3 f5 Qd5 Qe7 Nxc7+ Kd8 Nxa8 b6 * [ECO "C27"] [Opening "Vienna"] [Variation "Adams' gambit"] e4 e5 Nc3 Nf6 Bc4 Nxe4 Qh5 Nd6 Bb3 Nc6 d4 * [ECO "C27"] [Opening "Vienna game"] e4 e5 Nc3 Nf6 Bc4 Nxe4 Qh5 Nd6 Bb3 Be7 * [ECO "C27"] [Opening "Vienna"] [Variation "Alekhine variation"] e4 e5 Nc3 Nf6 Bc4 Nxe4 Qh5 Nd6 Bb3 Be7 Nf3 Nc6 Nxe5 * [ECO "C27"] [Opening "Boden-Kieseritsky gambit"] e4 e5 Nc3 Nf6 Bc4 Nxe4 Nf3 * [ECO "C27"] [Opening "Boden-Kieseritsky gambit"] [Variation "Lichtenhein defence"] e4 e5 Nc3 Nf6 Bc4 Nxe4 Nf3 d5 * [ECO "C28"] [Opening "Vienna game"] e4 e5 Nc3 Nf6 Bc4 Nc6 * [ECO "C29"] [Opening "Vienna gambit"] e4 e5 Nc3 Nf6 f4 d5 * [ECO "C29"] [Opening "Vienna gambit"] [Variation "Kaufmann variation"] e4 e5 Nc3 Nf6 f4 d5 fxe5 Nxe4 Nf3 Bg4 Qe2 * [ECO "C29"] [Opening "Vienna gambit"] [Variation "Breyer variation"] e4 e5 Nc3 Nf6 f4 d5 fxe5 Nxe4 Nf3 Be7 * [ECO "C29"] [Opening "Vienna gambit"] [Variation "Paulsen attack"] e4 e5 Nc3 Nf6 f4 d5 fxe5 Nxe4 Qf3 * [ECO "C29"] [Opening "Vienna gambit"] [Variation "Bardeleben variation"] e4 e5 Nc3 Nf6 f4 d5 fxe5 Nxe4 Qf3 f5 * [ECO "C29"] [Opening "Vienna gambit"] [Variation "Heyde variation"] e4 e5 Nc3 Nf6 f4 d5 fxe5 Nxe4 Qf3 f5 d4 * [ECO "C29"] [Opening "Vienna gambit"] e4 e5 Nc3 Nf6 f4 d5 fxe5 Nxe4 d3 * [ECO "C29"] [Opening "Vienna gambit, Wurzburger trap"] e4 e5 Nc3 Nf6 f4 d5 fxe5 Nxe4 d3 Qh4+ g3 Nxg3 Nf3 Qh5 Nxd5 * [ECO "C29"] [Opening "Vienna gambit, Steinitz variation"] e4 e5 Nc3 Nf6 f4 d5 d3 * [ECO "C30"] [Opening "King's gambit"] e4 e5 f4 * [ECO "C30"] [Opening "KGD"] [Variation "Keene's defence"] e4 e5 f4 Qh4+ g3 Qe7 * [ECO "C30"] [Opening "KGD"] [Variation "Mafia defence"] e4 e5 f4 c5 * [ECO "C30"] [Opening "KGD"] [Variation "Norwalde variation"] e4 e5 f4 Qf6 * [ECO "C30"] [Opening "KGD"] [Variation "Norwalde variation, Buecker gambit"] e4 e5 f4 Qf6 Nf3 Qxf4 Nc3 Bb4 Bc4 * [ECO "C30"] [Opening "KGD"] [Variation "classical variation"] e4 e5 f4 Bc5 * [ECO "C30"] [Opening "KGD"] [Variation "classical, Svenonius variation"] e4 e5 f4 Bc5 Nf3 d6 Nc3 Nf6 Bc4 Nc6 d3 Bg4 h3 Bxf3 Qxf3 exf4 * [ECO "C30"] [Opening "KGD"] [Variation "classical, Hanham variation"] e4 e5 f4 Bc5 Nf3 d6 Nc3 Nd7 * [ECO "C30"] [Opening "KGD"] [Variation "classical, 4.c3"] e4 e5 f4 Bc5 Nf3 d6 c3 * [ECO "C30"] [Opening "KGD"] [Variation "classical, Marshall attack"] e4 e5 f4 Bc5 Nf3 d6 c3 Bg4 fxe5 dxe5 Qa4+ * [ECO "C30"] [Opening "KGD"] [Variation "classical counter-gambit"] e4 e5 f4 Bc5 Nf3 d6 c3 f5 * [ECO "C30"] [Opening "KGD"] [Variation "classical, Reti variation"] e4 e5 f4 Bc5 Nf3 d6 c3 f5 fxe5 dxe5 d4 exd4 Bc4 * [ECO "C30"] [Opening "KGD"] [Variation "classical, Soldatenkov variation"] e4 e5 f4 Bc5 Nf3 d6 fxe5 * [ECO "C30"] [Opening "KGD"] [Variation "classical, Heath variation"] e4 e5 f4 Bc5 Nf3 d6 b4 * [ECO "C30"] [Opening "KGD"] [Variation "2...Nf6"] e4 e5 f4 Nf6 * [ECO "C31"] [Opening "KGD"] [Variation "Falkbeer counter-gambit"] e4 e5 f4 d5 * [ECO "C31"] [Opening "KGD"] [Variation "Falkbeer, Tartakower variation"] e4 e5 f4 d5 Nf3 * [ECO "C31"] [Opening "KGD"] [Variation "Falkbeer, Milner-Barry variation"] e4 e5 f4 d5 Nc3 * [ECO "C31"] [Opening "KGD"] [Variation "Falkbeer counter-gambit"] e4 e5 f4 d5 exd5 * [ECO "C31"] [Opening "KGD"] [Variation "Nimzovich counter-gambit"] e4 e5 f4 d5 exd5 c6 * [ECO "C31"] [Opening "KGD"] [Variation "Falkbeer, 3...e4"] e4 e5 f4 d5 exd5 e4 * [ECO "C31"] [Opening "KGD"] [Variation "Falkbeer, Rubinstein variation"] e4 e5 f4 d5 exd5 e4 Nc3 Nf6 Qe2 * [ECO "C31"] [Opening "KGD"] [Variation "Falkbeer, Nimzovich variation"] e4 e5 f4 d5 exd5 e4 Bb5+ * [ECO "C31"] [Opening "KGD"] [Variation "Falkbeer, 4.d3"] e4 e5 f4 d5 exd5 e4 d3 * [ECO "C31"] [Opening "KGD"] [Variation "Falkbeer, Morphy gambit"] e4 e5 f4 d5 exd5 e4 d3 Nf6 Nc3 Bb4 Bd2 e3 * [ECO "C32"] [Opening "KGD"] [Variation "Falkbeer, 5.de"] e4 e5 f4 d5 exd5 e4 d3 Nf6 dxe4 * [ECO "C32"] [Opening "KGD"] [Variation "Falkbeer, Alapin variation"] e4 e5 f4 d5 exd5 e4 d3 Nf6 dxe4 Nxe4 Nf3 Bc5 Qe2 Bf2+ Kd1 Qxd5+ Nfd2 * [ECO "C32"] [Opening "KGD"] [Variation "Falkbeer, main line, 7...Bf5"] e4 e5 f4 d5 exd5 e4 d3 Nf6 dxe4 Nxe4 Nf3 Bc5 Qe2 Bf5 * [ECO "C32"] [Opening "KGD"] [Variation "Falkbeer, Tarrasch variation"] e4 e5 f4 d5 exd5 e4 d3 Nf6 dxe4 Nxe4 Nf3 Bc5 Qe2 Bf5 g4 O-O * [ECO "C32"] [Opening "KGD"] [Variation "Falkbeer, Charousek gambit"] e4 e5 f4 d5 exd5 e4 d3 Nf6 dxe4 Nxe4 Qe2 * [ECO "C32"] [Opening "KGD"] [Variation "Falkbeer, Charousek variation"] e4 e5 f4 d5 exd5 e4 d3 Nf6 dxe4 Nxe4 Qe2 Qxd5 Nd2 f5 g4 * [ECO "C32"] [Opening "KGD"] [Variation "Falkbeer, Keres variation"] e4 e5 f4 d5 exd5 e4 d3 Nf6 Nd2 * [ECO "C32"] [Opening "KGD"] [Variation "Falkbeer, Reti variation"] e4 e5 f4 d5 exd5 e4 d3 Nf6 Qe2 * [ECO "C33"] [Opening "King's gambit accepted"] e4 e5 f4 exf4 * [ECO "C33"] [Opening "KGA"] [Variation "Tumbleweed gambit"] e4 e5 f4 exf4 Kf2 * [ECO "C33"] [Opening "KGA"] [Variation "Orsini gambit"] e4 e5 f4 exf4 b3 * [ECO "C33"] [Opening "KGA"] [Variation "Pawn's gambit (Stamma gambit)"] e4 e5 f4 exf4 h4 * [ECO "C33"] [Opening "KGA"] [Variation "Schurig gambit"] e4 e5 f4 exf4 Bd3 * [ECO "C33"] [Opening "KGA"] [Variation "Carrera (Basman) gambit"] e4 e5 f4 exf4 Qe2 * [ECO "C33"] [Opening "KGA"] [Variation "Villemson (Steinitz) gambit"] e4 e5 f4 exf4 d4 * [ECO "C33"] [Opening "KGA"] [Variation "Keres (Mason-Steinitz) gambit"] e4 e5 f4 exf4 Nc3 * [ECO "C33"] [Opening "KGA"] [Variation "Breyer gambit"] e4 e5 f4 exf4 Qf3 * [ECO "C33"] [Opening "KGA"] [Variation "Lesser bishop's (Petroff-Jaenisch-Tartakower) gambit"] e4 e5 f4 exf4 Be2 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit"] e4 e5 f4 exf4 Bc4 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Chigorin's attack"] e4 e5 f4 exf4 Bc4 Qh4+ Kf1 d5 Bxd5 g5 g3 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Greco variation"] e4 e5 f4 exf4 Bc4 Qh4+ Kf1 Bc5 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, classical defence"] e4 e5 f4 exf4 Bc4 Qh4+ Kf1 g5 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Grimm attack"] e4 e5 f4 exf4 Bc4 Qh4+ Kf1 g5 Nc3 Bg7 d4 d6 e5 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, classical defence"] e4 e5 f4 exf4 Bc4 Qh4+ Kf1 g5 Nc3 Bg7 d4 Ne7 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, McDonnell attack"] e4 e5 f4 exf4 Bc4 Qh4+ Kf1 g5 Nc3 Bg7 d4 Ne7 g3 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, McDonnell attack"] e4 e5 f4 exf4 Bc4 Qh4+ Kf1 g5 Nc3 Bg7 g3 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Fraser variation"] e4 e5 f4 exf4 Bc4 Qh4+ Kf1 g5 Nc3 Bg7 g3 fxg3 Qf3 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, classical defence, Cozio attack"] e4 e5 f4 exf4 Bc4 Qh4+ Kf1 g5 Qf3 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Boden defence"] e4 e5 f4 exf4 Bc4 Qh4+ Kf1 Nc6 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Bryan counter-gambit"] e4 e5 f4 exf4 Bc4 Qh4+ Kf1 b5 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Bryan counter-gambit"] e4 e5 f4 exf4 Bc4 b5 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Steinitz defence"] e4 e5 f4 exf4 Bc4 Ne7 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Maurian defence"] e4 e5 f4 exf4 Bc4 Nc6 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Ruy Lopez defence"] e4 e5 f4 exf4 Bc4 c6 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Lopez-Gianutio counter-gambit"] e4 e5 f4 exf4 Bc4 f5 * [ECO "C33"] [Opening "KGA"] [Variation "Lopez-Gianutio counter-gambit, Hein variation"] e4 e5 f4 exf4 Bc4 f5 Qe2 Qh4+ Kd1 fxe4 Nc3 Kd8 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Bledow variation"] e4 e5 f4 exf4 Bc4 d5 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Gifford variation"] e4 e5 f4 exf4 Bc4 d5 Bxd5 Qh4+ Kf1 g5 g3 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Boren-Svenonius variation"] e4 e5 f4 exf4 Bc4 d5 Bxd5 Qh4+ Kf1 Bd6 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Anderssen variation"] e4 e5 f4 exf4 Bc4 d5 Bxd5 c6 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Morphy variation"] e4 e5 f4 exf4 Bc4 d5 Bxd5 Nf6 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Cozio (Morphy) defence"] e4 e5 f4 exf4 Bc4 Nf6 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Bogolyubov variation"] e4 e5 f4 exf4 Bc4 Nf6 Nc3 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Paulsen attack"] e4 e5 f4 exf4 Bc4 Nf6 Nc3 Bb4 e5 * [ECO "C33"] [Opening "KGA"] [Variation "bishop's gambit, Jaenisch variation"] e4 e5 f4 exf4 Bc4 Nf6 Nc3 c6 * [ECO "C34"] [Opening "King's knight's gambit"] e4 e5 f4 exf4 Nf3 * [ECO "C34"] [Opening "KGA"] [Variation "Bonsch-Osmolovsky variation"] e4 e5 f4 exf4 Nf3 Ne7 * [ECO "C34"] [Opening "KGA"] [Variation "Gianutio counter-gambit"] e4 e5 f4 exf4 Nf3 f5 * [ECO "C34"] [Opening "KGA"] [Variation "Fischer defence"] e4 e5 f4 exf4 Nf3 d6 * [ECO "C34"] [Opening "KGA"] [Variation "Becker defence"] e4 e5 f4 exf4 Nf3 h6 * [ECO "C34"] [Opening "KGA"] [Variation "Schallop defence"] e4 e5 f4 exf4 Nf3 Nf6 * [ECO "C35"] [Opening "KGA"] [Variation "Cunningham defence"] e4 e5 f4 exf4 Nf3 Be7 * [ECO "C35"] [Opening "KGA"] [Variation "Cunningham, Bertin gambit"] e4 e5 f4 exf4 Nf3 Be7 Bc4 Bh4+ g3 * [ECO "C35"] [Opening "KGA"] [Variation "Cunningham, three pawns gambit"] e4 e5 f4 exf4 Nf3 Be7 Bc4 Bh4+ g3 fxg3 O-O gxh2+ Kh1 * [ECO "C35"] [Opening "KGA"] [Variation "Cunningham, Euwe defence"] e4 e5 f4 exf4 Nf3 Be7 Bc4 Nf6 * [ECO "C36"] [Opening "KGA"] [Variation "Abbazia defence (classical defence, modern defence[!])"] e4 e5 f4 exf4 Nf3 d5 * [ECO "C36"] [Opening "KGA"] [Variation "Abbazia defence, modern variation"] e4 e5 f4 exf4 Nf3 d5 exd5 Nf6 * [ECO "C36"] [Opening "KGA"] [Variation "Abbazia defence, Botvinnik variation"] e4 e5 f4 exf4 Nf3 d5 exd5 Nf6 Bb5+ c6 dxc6 bxc6 Bc4 Nd5 * [ECO "C37"] [Opening "KGA"] [Variation "Quaade gambit"] e4 e5 f4 exf4 Nf3 g5 Nc3 * [ECO "C37"] [Opening "KGA"] [Variation "Rosentreter gambit"] e4 e5 f4 exf4 Nf3 g5 d4 * [ECO "C37"] [Opening "KGA"] [Variation "Soerensen gambit"] e4 e5 f4 exf4 Nf3 g5 d4 g4 Ne5 * [ECO "C37"] [Opening "KGA"] [Variation "King's knight's gambit"] e4 e5 f4 exf4 Nf3 g5 Bc4 * [ECO "C37"] [Opening "KGA"] [Variation "Blachly gambit"] e4 e5 f4 exf4 Nf3 g5 Bc4 Nc6 * [ECO "C37"] [Opening "KGA"] [Variation "Lolli gambit (wild Muzio gambit)"] e4 e5 f4 exf4 Nf3 g5 Bc4 g4 Bxf7+ * [ECO "C37"] [Opening "KGA"] [Variation "Lolli gambit, Young variation"] e4 e5 f4 exf4 Nf3 g5 Bc4 g4 Bxf7+ Kxf7 O-O gxf3 Qxf3 Qf6 d4 Qxd4+ Be3 Qf6 Nc3 * [ECO "C37"] [Opening "KGA"] [Variation "Ghulam Kassim gambit"] e4 e5 f4 exf4 Nf3 g5 Bc4 g4 d4 * [ECO "C37"] [Opening "KGA"] [Variation "MacDonnell gambit"] e4 e5 f4 exf4 Nf3 g5 Bc4 g4 Nc3 * [ECO "C37"] [Opening "KGA"] [Variation "Salvio gambit"] e4 e5 f4 exf4 Nf3 g5 Bc4 g4 Ne5 * [ECO "C37"] [Opening "KGA"] [Variation "Silberschmidt gambit"] e4 e5 f4 exf4 Nf3 g5 Bc4 g4 Ne5 Qh4+ Kf1 Nh6 d4 f3 * [ECO "C37"] [Opening "KGA"] [Variation "Salvio gambit, Anderssen counter-attack"] e4 e5 f4 exf4 Nf3 g5 Bc4 g4 Ne5 Qh4+ Kf1 Nh6 d4 d6 * [ECO "C37"] [Opening "KGA"] [Variation "Cochrane gambit"] e4 e5 f4 exf4 Nf3 g5 Bc4 g4 Ne5 Qh4+ Kf1 f3 * [ECO "C37"] [Opening "KGA"] [Variation "Herzfeld gambit"] e4 e5 f4 exf4 Nf3 g5 Bc4 g4 Ne5 Qh4+ Kf1 Nc6 * [ECO "C37"] [Opening "KGA"] [Variation "Muzio gambit"] e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O * [ECO "C37"] [Opening "KGA"] [Variation "Muzio gambit, Paulsen variation"] e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O gxf3 Qxf3 Qf6 e5 Qxe5 d3 Bh6 Nc3 Ne7 Bd2 Nbc6 Rae1 * [ECO "C37"] [Opening "KGA"] [Variation "double Muzio gambit"] e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O gxf3 Qxf3 Qf6 e5 Qxe5 Bxf7+ * [ECO "C37"] [Opening "KGA"] [Variation "Muzio gambit, From defence"] e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O gxf3 Qxf3 Qe7 * [ECO "C37"] [Opening "KGA"] [Variation "Muzio gambit, Holloway defence"] e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O gxf3 Qxf3 Nc6 * [ECO "C37"] [Opening "KGA"] [Variation "Muzio gambit, Kling and Horwitz counter-attack"] e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O Qe7 * [ECO "C37"] [Opening "KGA"] [Variation "Muzio gambit, Brentano defence"] e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O d5 * [ECO "C38"] [Opening "King's knight's gambit"] e4 e5 f4 exf4 Nf3 g5 Bc4 Bg7 * [ECO "C38"] [Opening "KGA"] [Variation "Hanstein gambit"] e4 e5 f4 exf4 Nf3 g5 Bc4 Bg7 O-O * [ECO "C38"] [Opening "KGA"] [Variation "Philidor gambit"] e4 e5 f4 exf4 Nf3 g5 Bc4 Bg7 h4 * [ECO "C38"] [Opening "KGA"] [Variation "Greco gambit"] e4 e5 f4 exf4 Nf3 g5 Bc4 Bg7 h4 h6 d4 d6 Nc3 c6 hxg5 hxg5 Rxh8 Bxh8 Ne5 * [ECO "C38"] [Opening "KGA"] [Variation "Philidor gambit, Schultz variation"] e4 e5 f4 exf4 Nf3 g5 Bc4 Bg7 h4 h6 d4 d6 Qd3 * [ECO "C39"] [Opening "King's knight's gambit"] e4 e5 f4 exf4 Nf3 g5 h4 * [ECO "C39"] [Opening "KGA"] [Variation "Allgaier gambit"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ng5 * [ECO "C39"] [Opening "KGA"] [Variation "Allgaier, Horny defence"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ng5 h6 Nxf7 Kxf7 Qxg4 Nf6 Qxf4 Bd6 * [ECO "C39"] [Opening "KGA"] [Variation "Allgaier, Thorold variation"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ng5 h6 Nxf7 Kxf7 d4 * [ECO "C39"] [Opening "KGA"] [Variation "Allgaier, Cook variation"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ng5 h6 Nxf7 Kxf7 d4 d5 Bxf4 dxe4 Bc4+ Kg7 Be5+ * [ECO "C39"] [Opening "KGA"] [Variation "Allgaier, Blackburne gambit"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ng5 h6 Nxf7 Kxf7 Nc3 * [ECO "C39"] [Opening "KGA"] [Variation "Allgaier, Walker attack"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ng5 h6 Nxf7 Kxf7 Bc4+ * [ECO "C39"] [Opening "KGA"] [Variation "Allgaier, Urusov attack"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ng5 h6 Nxf7 Kxf7 Bc4+ d5 Bxd5+ Kg7 d4 * [ECO "C39"] [Opening "KGA"] [Variation "Allgaier, Schlechter defence"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ng5 Nf6 * [ECO "C39"] [Opening "KGA"] [Variation "Kieseritsky, Paulsen defence"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Bg7 * [ECO "C39"] [Opening "KGA"] [Variation "Kieseritsky, long whip (Stockwhip, classical) defence"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 h5 * [ECO "C39"] [Opening "KGA"] [Variation "Kieseritsky, long whip defence, Jaenisch variation"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 h5 Bc4 Rh7 d4 Bh6 Nc3 * [ECO "C39"] [Opening "KGA"] [Variation "Kieseritsky, Brentano (Campbell) defence"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 d5 * [ECO "C39"] [Opening "KGA"] [Variation "Kieseritsky, Brentano defence, Kaplanek variation"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 d5 d4 Nf6 exd5 Qxd5 Nc3 Bb4 Kf2 * [ECO "C39"] [Opening "KGA"] [Variation "Kieseritsky, Brentano defence"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 d5 d4 Nf6 Bxf4 * [ECO "C39"] [Opening "KGA"] [Variation "Kieseritsky, Brentano defence, Caro variation"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 d5 d4 Nf6 Bxf4 Nxe4 Nd2 * [ECO "C39"] [Opening "KGA"] [Variation "Kieseritsky, Salvio (Rosenthal) defence"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Qe7 * [ECO "C39"] [Opening "KGA"] [Variation "Kieseritsky, Salvio defence, Cozio variation"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Qe7 d4 f5 Bc4 * [ECO "C39"] [Opening "KGA"] [Variation "Kieseritsky, Polerio defence"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Be7 * [ECO "C39"] [Opening "KGA"] [Variation "Kieseritsky, Neumann defence"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Nc6 * [ECO "C39"] [Opening "KGA"] [Variation "Kieseritsky, Kolisch defence"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 d6 * [ECO "C39"] [Opening "KGA"] [Variation "Kieseritsky, Berlin defence"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Nf6 * [ECO "C39"] [Opening "KGA"] [Variation "Kieseritsky, Berlin defence, Riviere variation"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Nf6 Nxg4 d5 * [ECO "C39"] [Opening "KGA"] [Variation "Kieseritsky, Berlin defence, 6.Bc4"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Nf6 Bc4 * [ECO "C39"] [Opening "KGA"] [Variation "Kieseritsky, Rice gambit"] e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Nf6 Bc4 d5 exd5 Bd6 O-O * [ECO "C40"] [Opening "King's knight opening"] e4 e5 Nf3 * [ECO "C40"] [Opening "Gunderam defence"] e4 e5 Nf3 Qe7 * [ECO "C40"] [Opening "Greco defence"] e4 e5 Nf3 Qf6 * [ECO "C40"] [Opening "Damiano's defence"] e4 e5 Nf3 f6 * [ECO "C40"] [Opening "QP counter-gambit (elephant gambit)"] e4 e5 Nf3 d5 * [ECO "C40"] [Opening "QP counter-gambit"] [Variation "Maroczy gambit"] e4 e5 Nf3 d5 exd5 Bd6 * [ECO "C40"] [Opening "Latvian counter-gambit"] e4 e5 Nf3 f5 * [ECO "C40"] [Opening "Latvian"] [Variation "Nimzovich variation"] e4 e5 Nf3 f5 Nxe5 Qf6 d4 d6 Nc4 fxe4 Ne3 * [ECO "C40"] [Opening "Latvian"] [Variation "Fraser defence"] e4 e5 Nf3 f5 Nxe5 Nc6 * [ECO "C40"] [Opening "Latvian gambit, 3.Bc4"] e4 e5 Nf3 f5 Bc4 * [ECO "C40"] [Opening "Latvian"] [Variation "Behting variation"] e4 e5 Nf3 f5 Bc4 fxe4 Nxe5 Qg5 Nf7 Qxg2 Rf1 d5 Nxh8 Nf6 * [ECO "C40"] [Opening "Latvian"] [Variation "Polerio variation"] e4 e5 Nf3 f5 Bc4 fxe4 Nxe5 d5 * [ECO "C40"] [Opening "Latvian"] [Variation "corkscrew counter-gambit"] e4 e5 Nf3 f5 Bc4 fxe4 Nxe5 Nf6 * [ECO "C41"] [Opening "Philidor's defence"] e4 e5 Nf3 d6 * [ECO "C41"] [Opening "Philidor"] [Variation "Steinitz variation"] e4 e5 Nf3 d6 Bc4 Be7 c3 * [ECO "C41"] [Opening "Philidor"] [Variation "Lopez counter-gambit"] e4 e5 Nf3 d6 Bc4 f5 * [ECO "C41"] [Opening "Philidor"] [Variation "Lopez counter-gambit, Jaenisch variation"] e4 e5 Nf3 d6 Bc4 f5 d4 exd4 Ng5 Nh6 Nxh7 * [ECO "C41"] [Opening "Philidor's defence"] e4 e5 Nf3 d6 d4 * [ECO "C41"] [Opening "Philidor"] [Variation "Philidor counter-gambit"] e4 e5 Nf3 d6 d4 f5 * [ECO "C41"] [Opening "Philidor"] [Variation "Philidor counter-gambit, del Rio attack"] e4 e5 Nf3 d6 d4 f5 dxe5 fxe4 Ng5 d5 e6 * [ECO "C41"] [Opening "Philidor"] [Variation "Philidor counter-gambit, Berger variation"] e4 e5 Nf3 d6 d4 f5 dxe5 fxe4 Ng5 d5 e6 Bc5 Nc3 * [ECO "C41"] [Opening "Philidor"] [Variation "Philidor counter-gambit, Zukertort variation"] e4 e5 Nf3 d6 d4 f5 Nc3 * [ECO "C41"] [Opening "Philidor"] [Variation "exchange variation"] e4 e5 Nf3 d6 d4 exd4 * [ECO "C41"] [Opening "Philidor"] [Variation "Boden variation"] e4 e5 Nf3 d6 d4 exd4 Qxd4 Bd7 * [ECO "C41"] [Opening "Philidor"] [Variation "exchange variation"] e4 e5 Nf3 d6 d4 exd4 Nxd4 * [ECO "C41"] [Opening "Philidor"] [Variation "Paulsen attack"] e4 e5 Nf3 d6 d4 exd4 Nxd4 d5 exd5 * [ECO "C41"] [Opening "Philidor"] [Variation "exchange variation"] e4 e5 Nf3 d6 d4 exd4 Nxd4 Nf6 * [ECO "C41"] [Opening "Philidor"] [Variation "Berger variation"] e4 e5 Nf3 d6 d4 exd4 Nxd4 Nf6 Nc3 Be7 Be2 O-O O-O c5 Nf3 Nc6 Bg5 Be6 Re1 * [ECO "C41"] [Opening "Philidor"] [Variation "Larsen variation"] e4 e5 Nf3 d6 d4 exd4 Nxd4 g6 * [ECO "C41"] [Opening "Philidor"] [Variation "Nimzovich (Jaenisch) variation"] e4 e5 Nf3 d6 d4 Nf6 * [ECO "C41"] [Opening "Philidor"] [Variation "Improved Hanham variation"] e4 e5 Nf3 d6 d4 Nf6 Nc3 Nbd7 * [ECO "C41"] [Opening "Philidor"] [Variation "Nimzovich, Sozin variation"] e4 e5 Nf3 d6 d4 Nf6 Nc3 Nbd7 Bc4 Be7 O-O O-O Qe2 c6 a4 exd4 * [ECO "C41"] [Opening "Philidor"] [Variation "Nimzovich, Larobok variation"] e4 e5 Nf3 d6 d4 Nf6 Nc3 Nbd7 Bc4 Be7 Ng5 O-O Bxf7+ * [ECO "C41"] [Opening "Philidor"] [Variation "Nimzovich variation"] e4 e5 Nf3 d6 d4 Nf6 dxe5 * [ECO "C41"] [Opening "Philidor"] [Variation "Nimzovich, Sokolsky variation"] e4 e5 Nf3 d6 d4 Nf6 dxe5 Nxe4 Nbd2 * [ECO "C41"] [Opening "Philidor"] [Variation "Nimzovich, Rellstab variation"] e4 e5 Nf3 d6 d4 Nf6 dxe5 Nxe4 Qd5 * [ECO "C41"] [Opening "Philidor"] [Variation "Nimzovich, Locock variation"] e4 e5 Nf3 d6 d4 Nf6 Ng5 * [ECO "C41"] [Opening "Philidor"] [Variation "Nimzovich, Klein variation"] e4 e5 Nf3 d6 d4 Nf6 Bc4 * [ECO "C41"] [Opening "Philidor"] [Variation "Hanham variation"] e4 e5 Nf3 d6 d4 Nd7 * [ECO "C41"] [Opening "Philidor"] [Variation "Hanham, Krause variation"] e4 e5 Nf3 d6 d4 Nd7 Bc4 c6 O-O * [ECO "C41"] [Opening "Philidor"] [Variation "Hanham, Steiner variation"] e4 e5 Nf3 d6 d4 Nd7 Bc4 c6 O-O Be7 dxe5 * [ECO "C41"] [Opening "Philidor"] [Variation "Hanham, Kmoch variation"] e4 e5 Nf3 d6 d4 Nd7 Bc4 c6 Ng5 * [ECO "C41"] [Opening "Philidor"] [Variation "Hanham, Berger variation"] e4 e5 Nf3 d6 d4 Nd7 Bc4 c6 Ng5 Nh6 f4 Be7 O-O O-O c3 d5 * [ECO "C41"] [Opening "Philidor"] [Variation "Hanham, Schlechter variation"] e4 e5 Nf3 d6 d4 Nd7 Bc4 c6 Nc3 * [ECO "C41"] [Opening "Philidor"] [Variation "Hanham, Delmar variation"] e4 e5 Nf3 d6 d4 Nd7 Bc4 c6 c3 * [ECO "C42"] [Opening "Petrov's defence"] e4 e5 Nf3 Nf6 * [ECO "C42"] [Opening "Petrov"] [Variation "French attack"] e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d3 * [ECO "C42"] [Opening "Petrov"] [Variation "Kaufmann attack"] e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 c4 * [ECO "C42"] [Opening "Petrov"] [Variation "Nimzovich attack"] e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 Nc3 * [ECO "C42"] [Opening "Petrov"] [Variation "Cozio (Lasker) attack"] e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 Qe2 * [ECO "C42"] [Opening "Petrov"] [Variation "classical attack"] e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 * [ECO "C42"] [Opening "Petrov"] [Variation "classical attack, Chigorin variation"] e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Be7 O-O Nc6 Re1 * [ECO "C42"] [Opening "Petrov"] [Variation "classical attack, Berger variation"] e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Be7 O-O Nc6 Re1 Bg4 c3 f5 Nbd2 * [ECO "C42"] [Opening "Petrov"] [Variation "classical attack, Krause variation"] e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Be7 O-O Nc6 Re1 Bg4 c3 f5 c4 * [ECO "C42"] [Opening "Petrov"] [Variation "classical attack, Maroczy variation"] e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Be7 O-O Nc6 Re1 Bg4 c3 f5 c4 Bh4 * [ECO "C42"] [Opening "Petrov"] [Variation "classical attack, Jaenisch variation"] e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Be7 O-O Nc6 c4 * [ECO "C42"] [Opening "Petrov"] [Variation "classical attack, Mason variation"] e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Be7 O-O O-O * [ECO "C42"] [Opening "Petrov"] [Variation "classical attack, Marshall variation"] e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Bd6 * [ECO "C42"] [Opening "Petrov"] [Variation "classical attack, Tarrasch variation"] e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Bd6 O-O O-O c4 Bg4 * [ECO "C42"] [Opening "Petrov"] [Variation "classical attack, Marshall trap"] e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Bd6 O-O O-O c4 Bg4 cxd5 f5 Re1 Bxh2+ * [ECO "C42"] [Opening "Petrov"] [Variation "classical attack, close variation"] e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 Nf6 * [ECO "C42"] [Opening "Petrov"] [Variation "Cochrane gambit"] e4 e5 Nf3 Nf6 Nxe5 d6 Nxf7 * [ECO "C42"] [Opening "Petrov"] [Variation "Paulsen attack"] e4 e5 Nf3 Nf6 Nxe5 d6 Nc4 * [ECO "C42"] [Opening "Petrov"] [Variation "Damiano variation"] e4 e5 Nf3 Nf6 Nxe5 Nxe4 * [ECO "C42"] [Opening "Petrov three knights game"] e4 e5 Nf3 Nf6 Nc3 * [ECO "C42"] [Opening "Petrov"] [Variation "Italian variation"] e4 e5 Nf3 Nf6 Bc4 * [ECO "C43"] [Opening "Petrov"] [Variation "modern (Steinitz) attack"] e4 e5 Nf3 Nf6 d4 * [ECO "C43"] [Opening "Petrov"] [Variation "modern attack, main line"] e4 e5 Nf3 Nf6 d4 exd4 e5 Ne4 Qxd4 * [ECO "C43"] [Opening "Petrov"] [Variation "modern attack, Steinitz variation"] e4 e5 Nf3 Nf6 d4 exd4 e5 Ne4 Qe2 * [ECO "C43"] [Opening "Petrov"] [Variation "modern attack, Bardeleben variation"] e4 e5 Nf3 Nf6 d4 exd4 e5 Ne4 Qe2 Nc5 Nxd4 Nc6 * [ECO "C43"] [Opening "Petrov"] [Variation "Urusov gambit"] e4 e5 Nf3 Nf6 d4 exd4 Bc4 * [ECO "C43"] [Opening "Petrov"] [Variation "modern attack, Symmetrical variation"] e4 e5 Nf3 Nf6 d4 Nxe4 * [ECO "C43"] [Opening "Petrov"] [Variation "modern attack, Trifunovic variation"] e4 e5 Nf3 Nf6 d4 Nxe4 Bd3 d5 Nxe5 Bd6 O-O O-O c4 Bxe5 * [ECO "C44"] [Opening "King's pawn game"] e4 e5 Nf3 Nc6 * [ECO "C44"] [Opening "Irish (Chicago) gambit"] e4 e5 Nf3 Nc6 Nxe5 Nxe5 d4 * [ECO "C44"] [Opening "Konstantinopolsky opening"] e4 e5 Nf3 Nc6 g3 * [ECO "C44"] [Opening "Dresden opening"] e4 e5 Nf3 Nc6 c4 * [ECO "C44"] [Opening "Inverted Hungarian"] e4 e5 Nf3 Nc6 Be2 * [ECO "C44"] [Opening "Inverted Hanham"] e4 e5 Nf3 Nc6 Be2 Nf6 d3 d5 Nbd2 * [ECO "C44"] [Opening "Tayler opening"] e4 e5 Nf3 Nc6 Be2 Nf6 d4 * [ECO "C44"] [Opening "Ponziani opening"] e4 e5 Nf3 Nc6 c3 * [ECO "C44"] [Opening "Ponziani"] [Variation "Caro variation"] e4 e5 Nf3 Nc6 c3 d5 Qa4 Bd7 * [ECO "C44"] [Opening "Ponziani"] [Variation "Leonhardt variation"] e4 e5 Nf3 Nc6 c3 d5 Qa4 Nf6 * [ECO "C44"] [Opening "Ponziani"] [Variation "Steinitz variation"] e4 e5 Nf3 Nc6 c3 d5 Qa4 f6 * [ECO "C44"] [Opening "Ponziani"] [Variation "Jaenisch counter-attack"] e4 e5 Nf3 Nc6 c3 Nf6 * [ECO "C44"] [Opening "Ponziani"] [Variation "Fraser defence"] e4 e5 Nf3 Nc6 c3 Nf6 d4 Nxe4 d5 Bc5 * [ECO "C44"] [Opening "Ponziani"] [Variation "Reti variation"] e4 e5 Nf3 Nc6 c3 Nge7 * [ECO "C44"] [Opening "Ponziani"] [Variation "Romanishin variation"] e4 e5 Nf3 Nc6 c3 Be7 * [ECO "C44"] [Opening "Ponziani counter-gambit"] e4 e5 Nf3 Nc6 c3 f5 * [ECO "C44"] [Opening "Ponziani counter-gambit, Schmidt attack"] e4 e5 Nf3 Nc6 c3 f5 d4 d6 d5 * [ECO "C44"] [Opening "Ponziani counter-gambit, Cordel variation"] e4 e5 Nf3 Nc6 c3 f5 d4 d6 d5 fxe4 Ng5 Nb8 Nxe4 Nf6 Bd3 Be7 * [ECO "C44"] [Opening "Scotch opening"] e4 e5 Nf3 Nc6 d4 * [ECO "C44"] [Opening "Scotch"] [Variation "Lolli variation"] e4 e5 Nf3 Nc6 d4 Nxd4 * [ECO "C44"] [Opening "Scotch"] [Variation "Cochrane variation"] e4 e5 Nf3 Nc6 d4 Nxd4 Nxe5 Ne6 Bc4 c6 O-O Nf6 Nxf7 * [ECO "C44"] [Opening "Scotch"] [Variation "Relfsson gambit ('MacLopez')"] e4 e5 Nf3 Nc6 d4 exd4 Bb5 * [ECO "C44"] [Opening "Scotch"] [Variation "Goering gambit"] e4 e5 Nf3 Nc6 d4 exd4 c3 * [ECO "C44"] [Opening "Scotch"] [Variation "Sea-cadet mate"] e4 e5 Nf3 Nc6 d4 exd4 c3 dxc3 Nxc3 d6 Bc4 Bg4 O-O Ne5 Nxe5 Bxd1 Bxf7+ Ke7 Nd5# * [ECO "C44"] [Opening "Scotch"] [Variation "Goering gambit"] e4 e5 Nf3 Nc6 d4 exd4 c3 dxc3 Nxc3 Bb4 * [ECO "C44"] [Opening "Scotch"] [Variation "Goering gambit, Bardeleben variation"] e4 e5 Nf3 Nc6 d4 exd4 c3 dxc3 Nxc3 Bb4 Bc4 Nf6 * [ECO "C44"] [Opening "Scotch gambit"] e4 e5 Nf3 Nc6 d4 exd4 Bc4 * [ECO "C44"] [Opening "Scotch gambit"] [Variation "Anderssen (Paulsen, Suhle) counter-attack"] e4 e5 Nf3 Nc6 d4 exd4 Bc4 Bc5 O-O d6 c3 Bg4 * [ECO "C44"] [Opening "Scotch gambit"] e4 e5 Nf3 Nc6 d4 exd4 Bc4 Bc5 Ng5 * [ECO "C44"] [Opening "Scotch gambit"] [Variation "Cochrane-Shumov defence"] e4 e5 Nf3 Nc6 d4 exd4 Bc4 Bc5 Ng5 Nh6 Nxf7 Nxf7 Bxf7+ Kxf7 Qh5+ g6 Qxc5 d5 * [ECO "C44"] [Opening "Scotch gambit"] [Variation "Vitzhum attack"] e4 e5 Nf3 Nc6 d4 exd4 Bc4 Bc5 Ng5 Nh6 Qh5 * [ECO "C44"] [Opening "Scotch gambit"] e4 e5 Nf3 Nc6 d4 exd4 Bc4 Bb4+ * [ECO "C44"] [Opening "Scotch gambit"] [Variation "Hanneken variation"] e4 e5 Nf3 Nc6 d4 exd4 Bc4 Bb4+ c3 dxc3 O-O cxb2 Bxb2 Nf6 Ng5 O-O e5 Nxe5 * [ECO "C44"] [Opening "Scotch gambit"] e4 e5 Nf3 Nc6 d4 exd4 Bc4 Bb4+ c3 dxc3 bxc3 * [ECO "C44"] [Opening "Scotch gambit"] [Variation "Cochrane variation"] e4 e5 Nf3 Nc6 d4 exd4 Bc4 Bb4+ c3 dxc3 bxc3 Ba5 e5 * [ECO "C44"] [Opening "Scotch gambit"] [Variation "Benima defence"] e4 e5 Nf3 Nc6 d4 exd4 Bc4 Be7 * [ECO "C44"] [Opening "Scotch gambit"] [Variation "Dubois-Reti defence"] e4 e5 Nf3 Nc6 d4 exd4 Bc4 Nf6 * [ECO "C45"] [Opening "Scotch game"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 * [ECO "C45"] [Opening "Scotch"] [Variation "Ghulam Kassim variation"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Nxd4 Qxd4 d6 Bd3 * [ECO "C45"] [Opening "Scotch"] [Variation "Pulling counter-attack"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Qh4 * [ECO "C45"] [Opening "Scotch"] [Variation "Horwitz attack"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Qh4 Nb5 * [ECO "C45"] [Opening "Scotch"] [Variation "Berger variation"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Qh4 Nb5 Bb4+ Nd2 Qxe4+ Be2 Qxg2 Bf3 Qh3 Nxc7+ Kd8 Nxa8 Nf6 a3 * [ECO "C45"] [Opening "Scotch game"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Qh4 Nb5 Bb4+ Bd2 * [ECO "C45"] [Opening "Scotch"] [Variation "Rosenthal variation"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Qh4 Nb5 Bb4+ Bd2 Qxe4+ Be2 Kd8 O-O Bxd2 Nxd2 Qg6 * [ECO "C45"] [Opening "Scotch"] [Variation "Fraser attack"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Qh4 Nf3 * [ECO "C45"] [Opening "Scotch"] [Variation "Steinitz variation"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Qh4 Nc3 * [ECO "C45"] [Opening "Scotch"] [Variation "Schmidt variation"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Nf6 * [ECO "C45"] [Opening "Scotch"] [Variation "Mieses variation"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Nf6 Nxc6 bxc6 e5 * [ECO "C45"] [Opening "Scotch"] [Variation "Tartakower variation"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Nf6 Nxc6 bxc6 Nd2 * [ECO "C45"] [Opening "Scotch game"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 * [ECO "C45"] [Opening "Scotch"] [Variation "Blackburne attack"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Be3 Qf6 c3 Nge7 Qd2 * [ECO "C45"] [Opening "Scotch"] [Variation "Gottschall variation"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Be3 Qf6 c3 Nge7 Qd2 d5 Nb5 Bxe3 Qxe3 O-O Nxc7 Rb8 Nxd5 Nxd5 exd5 Nb4 * [ECO "C45"] [Opening "Scotch"] [Variation "Paulsen attack"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Be3 Qf6 c3 Nge7 Bb5 * [ECO "C45"] [Opening "Scotch"] [Variation "Paulsen, Gunsberg defence"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Be3 Qf6 c3 Nge7 Bb5 Nd8 * [ECO "C45"] [Opening "Scotch"] [Variation "Meitner variation"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Be3 Qf6 c3 Nge7 Nc2 * [ECO "C45"] [Opening "Scotch"] [Variation "Blumenfeld attack"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Be3 Qf6 Nb5 * [ECO "C45"] [Opening "Scotch"] [Variation "Potter variation"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Nb3 * [ECO "C45"] [Opening "Scotch"] [Variation "Romanishin variation"] e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Nb3 Bb4+ * [ECO "C46"] [Opening "Three knights game"] e4 e5 Nf3 Nc6 Nc3 * [ECO "C46"] [Opening "Three knights"] [Variation "Schlechter variation"] e4 e5 Nf3 Nc6 Nc3 Bb4 Nd5 Nf6 * [ECO "C46"] [Opening "Three knights"] [Variation "Winawer defence (Gothic defence)"] e4 e5 Nf3 Nc6 Nc3 f5 * [ECO "C46"] [Opening "Three knights"] [Variation "Steinitz variation"] e4 e5 Nf3 Nc6 Nc3 g6 * [ECO "C46"] [Opening "Three knights"] [Variation "Steinitz, Rosenthal variation"] e4 e5 Nf3 Nc6 Nc3 g6 d4 exd4 Nd5 * [ECO "C46"] [Opening "Four knights game"] e4 e5 Nf3 Nc6 Nc3 Nf6 * [ECO "C46"] [Opening "Four knights"] [Variation "Schultze-Mueller gambit"] e4 e5 Nf3 Nc6 Nc3 Nf6 Nxe5 * [ECO "C46"] [Opening "Four knights"] [Variation "Italian variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bc4 * [ECO "C46"] [Opening "Four knights"] [Variation "Gunsberg variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 a3 * [ECO "C47"] [Opening "Four knights"] [Variation "Scotch variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 d4 * [ECO "C47"] [Opening "Four knights"] [Variation "Scotch, Krause variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 d4 Bb4 Nxe5 * [ECO "C47"] [Opening "Four knights"] [Variation "Scotch, 4...exd4"] e4 e5 Nf3 Nc6 Nc3 Nf6 d4 exd4 * [ECO "C47"] [Opening "Four knights"] [Variation "Belgrade gambit"] e4 e5 Nf3 Nc6 Nc3 Nf6 d4 exd4 Nd5 * [ECO "C48"] [Opening "Four knights"] [Variation "Spanish variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 * [ECO "C48"] [Opening "Four knights"] [Variation "Ranken variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 a6 Bxc6 * [ECO "C48"] [Opening "Four knights"] [Variation "Spielmann variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 a6 Bxc6 dxc6 Nxe5 Nxe4 Nxe4 Qd4 O-O Qxe5 Re1 Be6 d4 Qd5 * [ECO "C48"] [Opening "Four knights"] [Variation "Spanish, classical defence"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bc5 * [ECO "C48"] [Opening "Four knights"] [Variation "Bardeleben variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bc5 O-O O-O Nxe5 Nxe5 d4 Bd6 f4 Nc6 e5 Bb4 * [ECO "C48"] [Opening "Four knights"] [Variation "Marshall variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bc5 O-O O-O Nxe5 Nd4 * [ECO "C48"] [Opening "Four knights"] [Variation "Rubinstein counter-gambit"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Nd4 * [ECO "C48"] [Opening "Four knights"] [Variation "Rubinstein counter-gambit, Bogolyubov variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Nd4 Nxe5 Qe7 f4 * [ECO "C48"] [Opening "Four knights"] [Variation "Rubinstein counter-gambit, 5.Be2"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Nd4 Be2 * [ECO "C48"] [Opening "Four knights"] [Variation "Rubinstein counter-gambit Maroczy variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Nd4 Be2 Nxf3+ Bxf3 Bc5 O-O O-O d3 d6 Na4 Bb6 * [ECO "C48"] [Opening "Four knights"] [Variation "Rubinstein counter-gambit, exchange variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Nd4 Nxd4 * [ECO "C48"] [Opening "Four knights"] [Variation "Rubinstein counter-gambit, Henneberger variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Nd4 O-O * [ECO "C49"] [Opening "Four knights"] [Variation "double Ruy Lopez"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 * [ECO "C49"] [Opening "Four knights"] [Variation "Gunsberg counter-attack"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O Nd5 Nxd5 exd5 e4 * [ECO "C49"] [Opening "Four knights"] [Variation "double Ruy Lopez"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 * [ECO "C49"] [Opening "Four knights"] [Variation "Alatortsev variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 Qe7 Ne2 d5 * [ECO "C49"] [Opening "Four knights"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 Bxc3 * [ECO "C49"] [Opening "Four knights"] [Variation "Janowski variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 Bxc3 bxc3 d6 Re1 * [ECO "C49"] [Opening "Four knights"] [Variation "Svenonius variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 Bxc3 bxc3 d5 * [ECO "C49"] [Opening "Four knights"] [Variation "symmetrical variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 d6 * [ECO "C49"] [Opening "Four knights"] [Variation "symmetrical, Metger unpin"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 d6 Bg5 Bxc3 bxc3 Qe7 * [ECO "C49"] [Opening "Four knights"] [Variation "symmetrical, Capablanca variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 d6 Bg5 Bxc3 bxc3 Qe7 Re1 Nd8 d4 Bg4 * [ECO "C49"] [Opening "Four knights"] [Variation "symmetrical, Pillsbury variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 d6 Bg5 Ne7 * [ECO "C49"] [Opening "Four knights"] [Variation "symmetrical, Blake variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 d6 Bg5 Ne7 Nh4 c6 Bc4 d5 Bb3 Qd6 * [ECO "C49"] [Opening "Four knights"] [Variation "symmetrical, Tarrasch variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 d6 Bg5 Be6 * [ECO "C49"] [Opening "Four knights"] [Variation "symmetrical, Maroczy system"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 d6 Ne2 * [ECO "C49"] [Opening "Four knights"] [Variation "Nimzovich (Paulsen) variation"] e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O Bxc6 * [ECO "C50"] [Opening "King's pawn game"] e4 e5 Nf3 Nc6 Bc4 * [ECO "C50"] [Opening "Blackburne shilling gambit"] e4 e5 Nf3 Nc6 Bc4 Nd4 Nxe5 Qg5 Nxf7 Qxg2 Rf1 Qxe4+ Be2 Nf3# * [ECO "C50"] [Opening "Rousseau gambit"] e4 e5 Nf3 Nc6 Bc4 f5 * [ECO "C50"] [Opening "Hungarian defence"] e4 e5 Nf3 Nc6 Bc4 Be7 * [ECO "C50"] [Opening "Hungarian defence"] [Variation "Tartakower variation"] e4 e5 Nf3 Nc6 Bc4 Be7 d4 exd4 c3 Nf6 e5 Ne4 * [ECO "C50"] [Opening "Giuoco Piano"] e4 e5 Nf3 Nc6 Bc4 Bc5 * [ECO "C50"] [Opening "Giuoco Piano"] [Variation "four knights variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 Nc3 Nf6 * [ECO "C50"] [Opening "Giuoco Piano"] [Variation "Jerome gambit"] e4 e5 Nf3 Nc6 Bc4 Bc5 Bxf7+ * [ECO "C50"] [Opening "Giuoco Pianissimo"] e4 e5 Nf3 Nc6 Bc4 Bc5 d3 * [ECO "C50"] [Opening "Giuoco Pianissimo"] [Variation "Dubois variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 d3 f5 Ng5 f4 * [ECO "C50"] [Opening "Giuoco Pianissimo"] e4 e5 Nf3 Nc6 Bc4 Bc5 d3 Nf6 * [ECO "C50"] [Opening "Giuoco Pianissimo"] [Variation "Italian four knights variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 d3 Nf6 Nc3 * [ECO "C50"] [Opening "Giuoco Pianissimo"] [Variation "Canal variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 d3 Nf6 Nc3 d6 Bg5 * [ECO "C51"] [Opening "Evans gambit declined"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 * [ECO "C51"] [Opening "Evans gambit declined, Lange variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bb6 b5 Na5 Nxe5 Nh6 * [ECO "C51"] [Opening "Evans gambit declined, Pavlov variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bb6 b5 Na5 Nxe5 Nh6 d4 d6 Bxh6 dxe5 Bxg7 Rg8 Bxf7+ Kxf7 Bxe5 Qg5 Nd2 * [ECO "C51"] [Opening "Evans gambit declined, Hirschbach variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bb6 b5 Na5 Nxe5 Qg5 * [ECO "C51"] [Opening "Evans gambit declined, Vasquez variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bb6 b5 Na5 Nxe5 Qg5 Bxf7+ Ke7 Qh5 * [ECO "C51"] [Opening "Evans gambit declined, Hicken variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bb6 b5 Na5 Nxe5 Qg5 Qf3 Qxe5 Qxf7+ Kd8 Bb2 * [ECO "C51"] [Opening "Evans gambit declined, 5.a4"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bb6 a4 * [ECO "C51"] [Opening "Evans gambit declined, Showalter variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bb6 a4 a6 Nc3 * [ECO "C51"] [Opening "Evans gambit declined, Cordel variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bb6 Bb2 * [ECO "C51"] [Opening "Evans counter-gambit"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 d5 * [ECO "C51"] [Opening "Evans gambit"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 * [ECO "C51"] [Opening "Evans gambit"] [Variation "normal variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bc5 d4 exd4 O-O d6 cxd4 Bb6 * [ECO "C51"] [Opening "Evans gambit"] [Variation "Ulvestad variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bc5 d4 exd4 O-O d6 cxd4 Bb6 d5 Na5 Bb2 * [ECO "C51"] [Opening "Evans gambit"] [Variation "Paulsen variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bc5 d4 exd4 O-O d6 cxd4 Bb6 d5 Na5 Bb2 Ne7 * [ECO "C51"] [Opening "Evans gambit"] [Variation "Morphy attack"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bc5 d4 exd4 O-O d6 cxd4 Bb6 Nc3 * [ECO "C51"] [Opening "Evans gambit"] [Variation "Goering attack"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bc5 d4 exd4 O-O d6 cxd4 Bb6 Nc3 Na5 Bg5 * [ECO "C51"] [Opening "Evans gambit"] [Variation "Steinitz variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bc5 d4 exd4 O-O d6 cxd4 Bb6 Nc3 Na5 Bg5 f6 Be3 * [ECO "C51"] [Opening "Evans gambit"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bc5 d4 exd4 O-O d6 cxd4 Bb6 Nc3 Bg4 * [ECO "C51"] [Opening "Evans gambit"] [Variation "Fraser attack"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bc5 d4 exd4 O-O d6 cxd4 Bb6 Nc3 Bg4 Qa4 * [ECO "C51"] [Opening "Evans gambit"] [Variation "Fraser-Mortimer attack"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bc5 d4 exd4 O-O d6 cxd4 Bb6 Nc3 Bg4 Qa4 Bd7 Qb3 Na5 Bxf7+ Kf8 Qc2 * [ECO "C51"] [Opening "Evans gambit"] [Variation "Stone-Ware variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bd6 * [ECO "C51"] [Opening "Evans gambit"] [Variation "Mayet defence"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bf8 * [ECO "C51"] [Opening "Evans gambit"] [Variation "5...Be7"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Be7 * [ECO "C51"] [Opening "Evans gambit"] [Variation "Cordel variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Be7 d4 Na5 * [ECO "C52"] [Opening "Evans gambit"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 * [ECO "C52"] [Opening "Evans gambit"] [Variation "compromised defence"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 d4 exd4 O-O dxc3 * [ECO "C52"] [Opening "Evans gambit"] [Variation "compromised defence, Paulsen variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 d4 exd4 O-O dxc3 Qb3 Qf6 e5 Qg6 Nxc3 Nge7 Ba3 * [ECO "C52"] [Opening "Evans gambit"] [Variation "compromised defence, Potter variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 d4 exd4 O-O dxc3 Qb3 Qf6 e5 Qg6 Nxc3 Nge7 Rd1 * [ECO "C52"] [Opening "Evans gambit"] [Variation "Leonhardt variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 d4 b5 * [ECO "C52"] [Opening "Evans gambit"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 d4 d6 * [ECO "C52"] [Opening "Evans gambit"] [Variation "Tartakower attack"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 d4 d6 Qb3 * [ECO "C52"] [Opening "Evans gambit"] [Variation "Levenfish variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 d4 d6 Qb3 Qd7 dxe5 dxe5 O-O Bb6 Ba3 Na5 Nxe5 * [ECO "C52"] [Opening "Evans gambit"] [Variation "Sokolsky variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 d4 d6 Bg5 * [ECO "C52"] [Opening "Evans gambit"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 O-O * [ECO "C52"] [Opening "Evans gambit"] [Variation "Richardson attack"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 O-O Nf6 d4 O-O Nxe5 * [ECO "C52"] [Opening "Evans gambit"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 O-O d6 * [ECO "C52"] [Opening "Evans gambit"] [Variation "Waller attack"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 O-O d6 d4 exd4 Qb3 * [ECO "C52"] [Opening "Evans gambit"] [Variation "Lasker defence"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 O-O d6 d4 Bb6 * [ECO "C52"] [Opening "Evans gambit"] [Variation "Sanders-Alapin variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 O-O d6 d4 Bd7 * [ECO "C52"] [Opening "Evans gambit"] [Variation "Alapin-Steinitz variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 O-O d6 d4 Bg4 * [ECO "C53"] [Opening "Giuoco Piano"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 * [ECO "C53"] [Opening "Giuoco Piano"] [Variation "LaBourdonnais variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 d6 d4 exd4 cxd4 Bb6 * [ECO "C53"] [Opening "Giuoco Piano"] [Variation "close variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Qe7 * [ECO "C53"] [Opening "Giuoco Piano"] [Variation "centre-holding variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Qe7 d4 Bb6 * [ECO "C53"] [Opening "Giuoco Piano"] [Variation "Tarrasch variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Qe7 d4 Bb6 O-O Nf6 a4 a6 Re1 d6 h3 * [ECO "C53"] [Opening "Giuoco Piano"] [Variation "Mestel variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Qe7 d4 Bb6 Bg5 * [ECO "C53"] [Opening "Giuoco Piano"] [Variation "Eisinger variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Qe7 d4 Bb6 d5 Nb8 d6 * [ECO "C53"] [Opening "Giuoco Piano"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 * [ECO "C53"] [Opening "Giuoco Piano"] [Variation "Bird's attack"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 b4 * [ECO "C53"] [Opening "Giuoco Piano"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 * [ECO "C53"] [Opening "Giuoco Piano"] [Variation "Ghulam Kassim variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 e5 Ne4 Bd5 Nxf2 Kxf2 dxc3+ Kg3 * [ECO "C53"] [Opening "Giuoco Piano"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 e5 d5 * [ECO "C53"] [Opening "Giuoco Piano"] [Variation "Anderssen variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 e5 d5 Bb5 Ne4 cxd4 Bb4+ * [ECO "C54"] [Opening "Giuoco Piano"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 cxd4 * [ECO "C54"] [Opening "Giuoco Piano"] [Variation "Krause variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 cxd4 Bb4+ Bd2 Nxe4 Bxb4 Nxb4 Bxf7+ Kxf7 Qb3+ d5 Ne5+ Kf6 f3 * [ECO "C54"] [Opening "Giuoco Piano"] [Variation "Cracow variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 cxd4 Bb4+ Kf1 * [ECO "C54"] [Opening "Giuoco Piano"] [Variation "Greco's attack"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 cxd4 Bb4+ Nc3 * [ECO "C54"] [Opening "Giuoco Piano"] [Variation "Greco variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 cxd4 Bb4+ Nc3 Nxe4 O-O Nxc3 * [ECO "C54"] [Opening "Giuoco Piano"] [Variation "Bernstein variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 cxd4 Bb4+ Nc3 Nxe4 O-O Nxc3 bxc3 Bxc3 Qb3 d5 * [ECO "C54"] [Opening "Giuoco Piano"] [Variation "Aitken variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 cxd4 Bb4+ Nc3 Nxe4 O-O Nxc3 bxc3 Bxc3 Ba3 * [ECO "C54"] [Opening "Giuoco Piano"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 cxd4 Bb4+ Nc3 Nxe4 O-O Bxc3 * [ECO "C54"] [Opening "Giuoco Piano"] [Variation "Steinitz variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 cxd4 Bb4+ Nc3 Nxe4 O-O Bxc3 bxc3 d5 Ba3 * [ECO "C54"] [Opening "Giuoco Piano"] [Variation "Moeller (Therkatz) attack"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 cxd4 Bb4+ Nc3 Nxe4 O-O Bxc3 d5 * [ECO "C54"] [Opening "Giuoco Piano"] [Variation "Therkatz-Herzog variation"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 cxd4 Bb4+ Nc3 Nxe4 O-O Bxc3 d5 Bf6 Re1 Ne7 Rxe4 d6 Bg5 Bxg5 Nxg5 O-O Nxh7 * [ECO "C54"] [Opening "Giuoco Piano"] [Variation "Moeller, bayonet attack"] e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 cxd4 Bb4+ Nc3 Nxe4 O-O Bxc3 d5 Bf6 Re1 Ne7 Rxe4 d6 g4 * [ECO "C55"] [Opening "Two knights defence"] e4 e5 Nf3 Nc6 Bc4 Nf6 * [ECO "C55"] [Opening "Giuoco piano"] [Variation "Rosentreter variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 O-O Bc5 d4 Bxd4 Nxd4 Nxd4 Bg5 h6 Bh4 g5 f4 * [ECO "C55"] [Opening "Giuoco piano"] e4 e5 Nf3 Nc6 Bc4 Nf6 O-O Bc5 d4 Bxd4 Nxd4 Nxd4 Bg5 d6 * [ECO "C55"] [Opening "Giuoco piano"] [Variation "Holzhausen attack"] e4 e5 Nf3 Nc6 Bc4 Nf6 O-O Bc5 d4 Bxd4 Nxd4 Nxd4 Bg5 d6 f4 Qe7 fxe5 dxe5 Nc3 * [ECO "C55"] [Opening "Two knights defence (Modern bishop's opening)"] e4 e5 Nf3 Nc6 Bc4 Nf6 d3 * [ECO "C55"] [Opening "Two knights defence"] e4 e5 Nf3 Nc6 Bc4 Nf6 d4 * [ECO "C55"] [Opening "Two knights defence, Keidanz variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 e5 d5 Bb5 Ne4 Nxd4 Bc5 Nxc6 Bxf2+ Kf1 Qh4 * [ECO "C55"] [Opening "Two knights defence, Perreux variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 Ng5 * [ECO "C55"] [Opening "Two knights defence"] e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O * [ECO "C55"] [Opening "two knights"] [Variation "Max Lange attack"] e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O Bc5 e5 * [ECO "C55"] [Opening "two knights"] [Variation "Max Lange attack, Berger variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O Bc5 e5 d5 exf6 dxc4 Re1+ Be6 Ng5 Qd5 Nc3 Qf5 g4 Qg6 Nce4 Bb6 f4 O-O-O * [ECO "C55"] [Opening "two knights"] [Variation "Max Lange attack, Marshall variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O Bc5 e5 d5 exf6 dxc4 Re1+ Be6 Ng5 Qd5 Nc3 Qf5 Nce4 * [ECO "C55"] [Opening "two knights"] [Variation "Max Lange attack, Rubinstein variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O Bc5 e5 d5 exf6 dxc4 Re1+ Be6 Ng5 Qd5 Nc3 Qf5 Nce4 Bf8 * [ECO "C55"] [Opening "two knights"] [Variation "Max Lange attack, Loman defence"] e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O Bc5 e5 d5 exf6 dxc4 Re1+ Be6 Ng5 g6 * [ECO "C55"] [Opening "two knights"] [Variation "Max Lange attack, Schlechter variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O Bc5 e5 d5 exf6 dxc4 Re1+ Be6 fxg7 * [ECO "C55"] [Opening "two knights"] [Variation "Max Lange attack, Steinitz variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O Bc5 e5 Ng4 * [ECO "C55"] [Opening "two knights"] [Variation "Max Lange attack, Krause variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O Bc5 e5 Ng4 c3 * [ECO "C56"] [Opening "Two knights defence"] e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O Nxe4 * [ECO "C56"] [Opening "two knights defence"] [Variation "Yurdansky attack"] e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O Nxe4 Re1 d5 Bxd5 Qxd5 Nc3 Qa5 Nxe4 Be6 Bg5 h6 Bh4 g5 Nf6+ Ke7 b4 * [ECO "C56"] [Opening "two knights defence"] [Variation "Canal variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O Nxe4 Re1 d5 Nc3 * [ECO "C57"] [Opening "Two knights defence"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 * [ECO "C57"] [Opening "two knights defence"] [Variation "Wilkes Barre (Traxler) variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 Bc5 * [ECO "C57"] [Opening "two knights defence"] [Variation "Ulvestad variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 b5 * [ECO "C57"] [Opening "two knights defence"] [Variation "Fritz variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Nd4 * [ECO "C57"] [Opening "two knights defence"] [Variation "Fritz, Gruber variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Nd4 c3 b5 Bf1 Nxd5 Ne4 * [ECO "C57"] [Opening "two knights defence"] [Variation "Lolli attack"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Nxd5 d4 * [ECO "C57"] [Opening "two knights defence"] [Variation "Pincus variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Nxd5 d4 Bb4+ * [ECO "C57"] [Opening "two knights defence"] [Variation "Fegatello attack"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Nxd5 Nxf7 * [ECO "C57"] [Opening "two knights defence"] [Variation "Fegatello attack, Leonhardt variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Nxd5 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Qe4 c6 a3 Na6 d4 Nc7 * [ECO "C57"] [Opening "two knights defence"] [Variation "Fegatello attack, Polerio defence"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Nxd5 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Ne7 * [ECO "C58"] [Opening "two knights defence"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 * [ECO "C58"] [Opening "two knights defence"] [Variation "Kieseritsky variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 d3 * [ECO "C58"] [Opening "two knights defence"] [Variation "Yankovich variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 d3 h6 Nf3 e4 Qe2 Nxc4 dxc4 Bc5 Nfd2 * [ECO "C58"] [Opening "two knights defence"] [Variation "Maroczy variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 d3 h6 Nf3 e4 Qe2 Nxc4 dxc4 Be7 * [ECO "C58"] [Opening "Two knights defence"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 Bb5+ * [ECO "C58"] [Opening "two knights defence"] [Variation "Bogolyubov variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 Bb5+ c6 dxc6 bxc6 Qf3 * [ECO "C58"] [Opening "two knights defence"] [Variation "Paoli variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 Bb5+ c6 dxc6 bxc6 Qf3 Qc7 Bd3 * [ECO "C58"] [Opening "two knights defence"] [Variation "Colman variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 Bb5+ c6 dxc6 bxc6 Qf3 Rb8 * [ECO "C58"] [Opening "two knights defence"] [Variation "Blackburne variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 Bb5+ c6 dxc6 bxc6 Qf3 cxb5 * [ECO "C58"] [Opening "Two knights defence"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 Bb5+ c6 dxc6 bxc6 Be2 * [ECO "C59"] [Opening "Two knights defence"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 Bb5+ c6 dxc6 bxc6 Be2 h6 * [ECO "C59"] [Opening "two knights defence"] [Variation "Knorre variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 Bb5+ c6 dxc6 bxc6 Be2 h6 Nf3 e4 Ne5 Bd6 d4 Qc7 Bd2 * [ECO "C59"] [Opening "two knights defence"] [Variation "Goering variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 Bb5+ c6 dxc6 bxc6 Be2 h6 Nf3 e4 Ne5 Qc7 * [ECO "C59"] [Opening "two knights defence"] [Variation "Steinitz variation"] e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 Bb5+ c6 dxc6 bxc6 Be2 h6 Nh3 * [ECO "C60"] [Opening "Ruy Lopez (Spanish opening)"] e4 e5 Nf3 Nc6 Bb5 * [ECO "C60"] [Opening "Ruy Lopez"] [Variation "Nuernberg variation"] e4 e5 Nf3 Nc6 Bb5 f6 * [ECO "C60"] [Opening "Ruy Lopez"] [Variation "Pollock defence"] e4 e5 Nf3 Nc6 Bb5 Na5 * [ECO "C60"] [Opening "Ruy Lopez"] [Variation "Lucena defence"] e4 e5 Nf3 Nc6 Bb5 Be7 * [ECO "C60"] [Opening "Ruy Lopez"] [Variation "Vinogradov variation"] e4 e5 Nf3 Nc6 Bb5 Qe7 * [ECO "C60"] [Opening "Ruy Lopez"] [Variation "Brentano defence"] e4 e5 Nf3 Nc6 Bb5 g5 * [ECO "C60"] [Opening "Ruy Lopez"] [Variation "fianchetto (Smyslov/Barnes) defence"] e4 e5 Nf3 Nc6 Bb5 g6 * [ECO "C60"] [Opening "Ruy Lopez"] [Variation "Cozio defence"] e4 e5 Nf3 Nc6 Bb5 Nge7 * [ECO "C60"] [Opening "Ruy Lopez"] [Variation "Cozio defence, Paulsen variation"] e4 e5 Nf3 Nc6 Bb5 Nge7 Nc3 g6 * [ECO "C61"] [Opening "Ruy Lopez"] [Variation "Bird's defence"] e4 e5 Nf3 Nc6 Bb5 Nd4 * [ECO "C61"] [Opening "Ruy Lopez"] [Variation "Bird's defence, Paulsen variation"] e4 e5 Nf3 Nc6 Bb5 Nd4 Nxd4 exd4 O-O Ne7 * [ECO "C62"] [Opening "Ruy Lopez"] [Variation "old Steinitz defence"] e4 e5 Nf3 Nc6 Bb5 d6 * [ECO "C62"] [Opening "Ruy Lopez"] [Variation "old Steinitz defence, Nimzovich attack"] e4 e5 Nf3 Nc6 Bb5 d6 d4 Bd7 Nc3 Nf6 Bxc6 * [ECO "C62"] [Opening "Ruy Lopez"] [Variation "old Steinitz defence, semi-Duras variation"] e4 e5 Nf3 Nc6 Bb5 d6 d4 Bd7 c4 * [ECO "C63"] [Opening "Ruy Lopez"] [Variation "Schliemann defence"] e4 e5 Nf3 Nc6 Bb5 f5 * [ECO "C63"] [Opening "Ruy Lopez"] [Variation "Schliemann defence, Berger variation"] e4 e5 Nf3 Nc6 Bb5 f5 Nc3 * [ECO "C64"] [Opening "Ruy Lopez"] [Variation "classical (Cordel) defence"] e4 e5 Nf3 Nc6 Bb5 Bc5 * [ECO "C64"] [Opening "Ruy Lopez"] [Variation "classical defence, Zaitsev variation"] e4 e5 Nf3 Nc6 Bb5 Bc5 O-O Nd4 b4 * [ECO "C64"] [Opening "Ruy Lopez"] [Variation "classical defence, 4.c3"] e4 e5 Nf3 Nc6 Bb5 Bc5 c3 * [ECO "C64"] [Opening "Ruy Lopez"] [Variation "classical defence, Benelux variation "] e4 e5 Nf3 Nc6 Bb5 Bc5 c3 Nf6 O-O O-O d4 Bb6 * [ECO "C64"] [Opening "Ruy Lopez"] [Variation "classical defence, Charousek variation"] e4 e5 Nf3 Nc6 Bb5 Bc5 c3 Bb6 * [ECO "C64"] [Opening "Ruy Lopez"] [Variation "classical defence, Boden variation"] e4 e5 Nf3 Nc6 Bb5 Bc5 c3 Qe7 * [ECO "C64"] [Opening "Ruy Lopez"] [Variation "Cordel gambit"] e4 e5 Nf3 Nc6 Bb5 Bc5 c3 f5 * [ECO "C65"] [Opening "Ruy Lopez"] [Variation "Berlin defence"] e4 e5 Nf3 Nc6 Bb5 Nf6 * [ECO "C65"] [Opening "Ruy Lopez"] [Variation "Berlin defence, Nyholm attack"] e4 e5 Nf3 Nc6 Bb5 Nf6 d4 exd4 O-O * [ECO "C65"] [Opening "Ruy Lopez"] [Variation "Berlin defence, Mortimer variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 d3 Ne7 * [ECO "C65"] [Opening "Ruy Lopez"] [Variation "Berlin defence, Mortimer trap"] e4 e5 Nf3 Nc6 Bb5 Nf6 d3 Ne7 Nxe5 c6 * [ECO "C65"] [Opening "Ruy Lopez"] [Variation "Berlin defence, Anderssen variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 d3 d6 Bxc6+ * [ECO "C65"] [Opening "Ruy Lopez"] [Variation "Berlin defence, Duras variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 d3 d6 c4 * [ECO "C65"] [Opening "Ruy Lopez"] [Variation "Berlin defence, Kaufmann variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 d3 Bc5 Be3 * [ECO "C65"] [Opening "Ruy Lopez"] [Variation "Berlin defence, 4.O-O"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O * [ECO "C65"] [Opening "Ruy Lopez"] [Variation "Berlin defence, Beverwijk variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Bc5 * [ECO "C66"] [Opening "Ruy Lopez"] [Variation "Berlin defence, 4.O-O, d6"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O d6 * [ECO "C66"] [Opening "Ruy Lopez"] [Variation "Berlin defence, hedgehog variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O d6 d4 Bd7 Nc3 Be7 * [ECO "C66"] [Opening "Ruy Lopez"] [Variation "Berlin defence, Tarrasch trap"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O d6 d4 Bd7 Nc3 Be7 Re1 O-O * [ECO "C66"] [Opening "Ruy Lopez"] [Variation "closed Berlin defence, Bernstein variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O d6 d4 Bd7 Nc3 Be7 Bg5 * [ECO "C66"] [Opening "Ruy Lopez"] [Variation "closed Berlin defence, Showalter variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O d6 d4 Bd7 Nc3 Be7 Bxc6 * [ECO "C66"] [Opening "Ruy Lopez"] [Variation "closed Berlin defence, Wolf variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O d6 d4 Bd7 Nc3 exd4 * [ECO "C66"] [Opening "Ruy Lopez"] [Variation "closed Berlin defence, Chigorin variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O d6 d4 Nd7 * [ECO "C67"] [Opening "Ruy Lopez"] [Variation "Berlin defence, open variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 * [ECO "C67"] [Opening "Ruy Lopez"] [Variation "open Berlin defence, l'Hermet variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Nd6 dxe5 * [ECO "C67"] [Opening "Ruy Lopez"] [Variation "open Berlin defence, Showalter variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Nd6 Ba4 * [ECO "C67"] [Opening "Ruy Lopez"] [Variation "open Berlin defence, 5...Be7"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Be7 * [ECO "C67"] [Opening "Ruy Lopez"] [Variation "Berlin defence, Rio de Janeiro variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Be7 Qe2 Nd6 Bxc6 bxc6 dxe5 Nb7 Nc3 O-O Re1 Nc5 Nd4 Ne6 Be3 Nxd4 Bxd4 c5 * [ECO "C67"] [Opening "Ruy Lopez"] [Variation "Berlin defence, Zukertort variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Be7 Qe2 Nd6 Bxc6 bxc6 dxe5 Nb7 c4 * [ECO "C67"] [Opening "Ruy Lopez"] [Variation "Berlin defence, Pillsbury variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Be7 Qe2 Nd6 Bxc6 bxc6 dxe5 Nb7 b3 * [ECO "C67"] [Opening "Ruy Lopez"] [Variation "Berlin defence, Winawer attack"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Be7 Qe2 Nd6 Bxc6 bxc6 dxe5 Nb7 Nd4 * [ECO "C67"] [Opening "Ruy Lopez"] [Variation "Berlin defence, Cordel variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Be7 Qe2 Nd6 Bxc6 bxc6 dxe5 Nf5 * [ECO "C67"] [Opening "Ruy Lopez"] [Variation "Berlin defence, Trifunovic variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Be7 Qe2 d5 * [ECO "C67"] [Opening "Ruy Lopez"] [Variation "Berlin defence, Minckwitz variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Be7 dxe5 * [ECO "C67"] [Opening "Ruy Lopez"] [Variation "Berlin defence, Rosenthal variation"] e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 a6 * [ECO "C68"] [Opening "Ruy Lopez"] [Variation "exchange variation"] e4 e5 Nf3 Nc6 Bb5 a6 Bxc6 * [ECO "C68"] [Opening "Ruy Lopez"] [Variation "exchange, Alekhine variation"] e4 e5 Nf3 Nc6 Bb5 a6 Bxc6 dxc6 d4 exd4 Qxd4 Qxd4 Nxd4 Bd7 * [ECO "C68"] [Opening "Ruy Lopez"] [Variation "exchange, Keres variation"] e4 e5 Nf3 Nc6 Bb5 a6 Bxc6 dxc6 Nc3 * [ECO "C68"] [Opening "Ruy Lopez"] [Variation "exchange, Romanovsky variation"] e4 e5 Nf3 Nc6 Bb5 a6 Bxc6 dxc6 Nc3 f6 d3 * [ECO "C69"] [Opening "Ruy Lopez"] [Variation "exchange variation, 5.O-O"] e4 e5 Nf3 Nc6 Bb5 a6 Bxc6 dxc6 O-O * [ECO "C69"] [Opening "Ruy Lopez"] [Variation "exchange variation, Alapin gambit"] e4 e5 Nf3 Nc6 Bb5 a6 Bxc6 dxc6 O-O Bg4 h3 h5 * [ECO "C69"] [Opening "Ruy Lopez"] [Variation "exchange, Gligoric variation"] e4 e5 Nf3 Nc6 Bb5 a6 Bxc6 dxc6 O-O f6 * [ECO "C69"] [Opening "Ruy Lopez"] [Variation "exchange, Bronstein variation"] e4 e5 Nf3 Nc6 Bb5 a6 Bxc6 dxc6 O-O Qd6 * [ECO "C70"] [Opening "Ruy Lopez"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 * [ECO "C70"] [Opening "Ruy Lopez"] [Variation "fianchetto defence deferred"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 g6 * [ECO "C70"] [Opening "Ruy Lopez"] [Variation "Cozio defence deferred"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nge7 * [ECO "C70"] [Opening "Ruy Lopez"] [Variation "Bird's defence deferred"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nd4 * [ECO "C70"] [Opening "Ruy Lopez"] [Variation "Alapin's defence deferred"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Bb4 * [ECO "C70"] [Opening "Ruy Lopez"] [Variation "Classical defence deferred"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Bc5 * [ECO "C70"] [Opening "Ruy Lopez"] [Variation "Caro variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 b5 * [ECO "C70"] [Opening "Ruy Lopez"] [Variation "Graz variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 b5 Bb3 Bc5 * [ECO "C70"] [Opening "Ruy Lopez"] [Variation "Taimanov (chase/wing/accelerated counterthrust) variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 b5 Bb3 Na5 * [ECO "C70"] [Opening "Ruy Lopez"] [Variation "Schliemann defence deferred"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 f5 * [ECO "C71"] [Opening "Ruy Lopez"] [Variation "modern Steinitz defence"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 * [ECO "C71"] [Opening "Ruy Lopez"] [Variation "Noah's ark trap"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 d4 b5 Bb3 Nxd4 Nxd4 exd4 Qxd4 c5 * [ECO "C71"] [Opening "Ruy Lopez"] [Variation "modern Steinitz defence, Three knights variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 Nc3 * [ECO "C71"] [Opening "Ruy Lopez"] [Variation "modern Steinitz defence, Duras (Keres) variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 c4 * [ECO "C72"] [Opening "Ruy Lopez"] [Variation "modern Steinitz defence, 5.O-O"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 O-O * [ECO "C73"] [Opening "Ruy Lopez"] [Variation "modern Steinitz defence, Richter variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 Bxc6+ bxc6 d4 * [ECO "C73"] [Opening "Ruy Lopez"] [Variation "modern Steinitz defence, Alapin variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 Bxc6+ bxc6 d4 f6 * [ECO "C74"] [Opening "Ruy Lopez"] [Variation "modern Steinitz defence"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 c3 * [ECO "C74"] [Opening "Ruy Lopez"] [Variation "modern Steinitz defence, siesta variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 c3 f5 * [ECO "C74"] [Opening "Ruy Lopez"] [Variation "Siesta, Kopayev variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 c3 f5 exf5 Bxf5 O-O * [ECO "C75"] [Opening "Ruy Lopez"] [Variation "modern Steinitz defence"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 c3 Bd7 * [ECO "C75"] [Opening "Ruy Lopez"] [Variation "modern Steinitz defence, Rubinstein variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 c3 Bd7 d4 Nge7 * [ECO "C76"] [Opening "Ruy Lopez"] [Variation "modern Steinitz defence, fianchetto (Bronstein) variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 c3 Bd7 d4 g6 * [ECO "C77"] [Opening "Ruy Lopez"] [Variation "Morphy defence"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 * [ECO "C77"] [Opening "Ruy Lopez"] [Variation "four knights (Tarrasch) variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 Nc3 * [ECO "C77"] [Opening "Ruy Lopez"] [Variation "Treybal (Bayreuth) variation (exchange var. deferred)"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 Bxc6 * [ECO "C77"] [Opening "Ruy Lopez"] [Variation "Wormald (Alapin) attack"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 Qe2 * [ECO "C77"] [Opening "Ruy Lopez"] [Variation "Wormald attack, Gruenfeld variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 Qe2 b5 Bb3 Be7 d4 d6 c3 Bg4 * [ECO "C77"] [Opening "Ruy Lopez"] [Variation "Anderssen variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 d3 * [ECO "C77"] [Opening "Ruy Lopez"] [Variation "Morphy defence, Duras variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 d3 d6 c4 * [ECO "C78"] [Opening "Ruy Lopez"] [Variation "5.O-O"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O * [ECO "C78"] [Opening "Ruy Lopez"] [Variation "Wing attack"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O b5 Bb3 Be7 a4 * [ECO "C78"] [Opening "Ruy Lopez"] [Variation "...b5 & ...d6"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O b5 Bb3 d6 * [ECO "C78"] [Opening "Ruy Lopez"] [Variation "Rabinovich variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O b5 Bb3 d6 Ng5 d5 exd5 Nd4 Re1 Bc5 Rxe5+ Kf8 * [ECO "C78"] [Opening "Ruy Lopez"] [Variation "Archangelsk (counterthrust) variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O b5 Bb3 Bb7 * [ECO "C78"] [Opening "Ruy Lopez"] [Variation "Moeller defence"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Bc5 * [ECO "C79"] [Opening "Ruy Lopez"] [Variation "Steinitz defence deferred (Russian defence)"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O d6 * [ECO "C79"] [Opening "Ruy Lopez"] [Variation "Steinitz defence deferred, Lipnitsky variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O d6 Bxc6+ bxc6 d4 Bg4 * [ECO "C79"] [Opening "Ruy Lopez"] [Variation "Steinitz defence deferred, Rubinstein variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O d6 Bxc6+ bxc6 d4 Nxe4 * [ECO "C79"] [Opening "Ruy Lopez"] [Variation "Steinitz defence deferred, Boleslavsky variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O d6 Bxc6+ bxc6 d4 Nxe4 Re1 f5 dxe5 d5 Nc3 * [ECO "C80"] [Opening "Ruy Lopez"] [Variation "open (Tarrasch) defence"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 * [ECO "C80"] [Opening "Ruy Lopez"] [Variation "open, Tartakower variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 Qe2 * [ECO "C80"] [Opening "Ruy Lopez"] [Variation "open, Knorre variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 Nc3 * [ECO "C80"] [Opening "Ruy Lopez"] [Variation "open, 6.d4"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 * [ECO "C80"] [Opening "Ruy Lopez"] [Variation "open, Riga variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 exd4 * [ECO "C80"] [Opening "Ruy Lopez"] [Variation "open, 6.d4 b5"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 * [ECO "C80"] [Opening "Ruy Lopez"] [Variation "open, Friess attack"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Nxe5 * [ECO "C80"] [Opening "Ruy Lopez"] [Variation "open, Richter variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 d5 * [ECO "C80"] [Opening "Ruy Lopez"] [Variation "open, 7.Bb3"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 * [ECO "C80"] [Opening "Ruy Lopez"] [Variation "open, Schlechter defence"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 a4 Nxd4 * [ECO "C80"] [Opening "Ruy Lopez"] [Variation "open, Berger variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 a4 Nxd4 Nxd4 exd4 Nc3 * [ECO "C80"] [Opening "Ruy Lopez"] [Variation "open, Harksen gambit"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 c4 * [ECO "C80"] [Opening "Ruy Lopez"] [Variation "open, 8.de"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 * [ECO "C80"] [Opening "Ruy Lopez"] [Variation "open, Zukertort variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Ne7 * [ECO "C80"] [Opening "Ruy Lopez"] [Variation "open, 8...Be6"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 * [ECO "C80"] [Opening "Ruy Lopez"] [Variation "open, Bernstein variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 Nbd2 * [ECO "C80"] [Opening "Ruy Lopez"] [Variation "open, Bernstein variation, Karpov gambit"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 Nbd2 Nc5 c3 d4 Ng5 * [ECO "C81"] [Opening "Ruy Lopez"] [Variation "open, Howell attack"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 Qe2 * [ECO "C81"] [Opening "Ruy Lopez"] [Variation "open, Howell attack, Ekstroem variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 Qe2 Be7 Rd1 O-O c4 bxc4 Bxc4 Qd7 * [ECO "C81"] [Opening "Ruy Lopez"] [Variation "open, Howell attack, Adam variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 Qe2 Be7 c4 * [ECO "C82"] [Opening "Ruy Lopez"] [Variation "open, 9.c3"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 * [ECO "C82"] [Opening "Ruy Lopez"] [Variation "open, Berlin variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Nc5 * [ECO "C82"] [Opening "Ruy Lopez"] [Variation "open, Italian variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Bc5 * [ECO "C82"] [Opening "Ruy Lopez"] [Variation "open, St. Petersburg variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Bc5 Nbd2 * [ECO "C82"] [Opening "Ruy Lopez"] [Variation "open, Dilworth variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Bc5 Nbd2 O-O Bc2 Nxf2 * [ECO "C82"] [Opening "Ruy Lopez"] [Variation "open, Motzko attack"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Bc5 Qd3 * [ECO "C82"] [Opening "Ruy Lopez"] [Variation "open, Motzko attack, Nenarokov variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Bc5 Qd3 Ne7 * [ECO "C83"] [Opening "Ruy Lopez"] [Variation "open, classical defence"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Be7 * [ECO "C83"] [Opening "Ruy Lopez"] [Variation "open, Malkin variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Be7 Nbd2 O-O Qe2 * [ECO "C83"] [Opening "Ruy Lopez"] [Variation "open, 9...Be7, 10.Re1"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Be7 Re1 * [ECO "C83"] [Opening "Ruy Lopez"] [Variation "open, Tarrasch trap"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Be7 Re1 O-O Nd4 Qd7 Nxe6 fxe6 Rxe4 * [ECO "C83"] [Opening "Ruy Lopez"] [Variation "open, Breslau variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Be7 Re1 O-O Nd4 Nxe5 * [ECO "C84"] [Opening "Ruy Lopez"] [Variation "closed defence"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 * [ECO "C84"] [Opening "Ruy Lopez"] [Variation "closed, centre attack"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 d4 * [ECO "C84"] [Opening "Ruy Lopez"] [Variation "closed, Basque gambit (North Spanish variation)"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 d4 exd4 e5 Ne4 c3 * [ECO "C85"] [Opening "Ruy Lopez"] [Variation "Exchange variation doubly deferred (DERLD)"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Bxc6 * [ECO "C86"] [Opening "Ruy Lopez"] [Variation "Worrall attack"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Qe2 * [ECO "C86"] [Opening "Ruy Lopez"] [Variation "Worrall attack, sharp line"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Qe2 b5 Bb3 O-O * [ECO "C86"] [Opening "Ruy Lopez"] [Variation "Worrall attack, solid line"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Qe2 b5 Bb3 d6 * [ECO "C87"] [Opening "Ruy Lopez"] [Variation "closed, Averbach variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 d6 * [ECO "C88"] [Opening "Ruy Lopez"] [Variation "closed"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 * [ECO "C88"] [Opening "Ruy Lopez"] [Variation "closed, Leonhardt variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 Na5 Bc2 c5 d4 Qc7 h3 Nc6 d5 Nb8 Nbd2 g5 * [ECO "C88"] [Opening "Ruy Lopez"] [Variation "closed, Balla variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 Na5 Bc2 c5 d4 Qc7 a4 * [ECO "C88"] [Opening "Ruy Lopez"] [Variation "closed, 7...d6, 8.d4"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 d4 * [ECO "C88"] [Opening "Ruy Lopez"] [Variation "Noah's ark trap"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 d4 Nxd4 Nxd4 exd4 Qxd4 c5 * [ECO "C88"] [Opening "Ruy Lopez"] [Variation "Trajkovic counter-attack"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 Bb7 * [ECO "C88"] [Opening "Ruy Lopez"] [Variation "closed, 7...O-O"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O * [ECO "C88"] [Opening "Ruy Lopez"] [Variation "closed, anti-Marshall 8.a4"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O a4 * [ECO "C88"] [Opening "Ruy Lopez"] [Variation "closed, 8.c3"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 * [ECO "C89"] [Opening "Ruy Lopez"] [Variation "Marshall counter-attack"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d5 * [ECO "C89"] [Opening "Ruy Lopez"] [Variation "Marshall counter-attack, 11...c6"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d5 exd5 Nxd5 Nxe5 Nxe5 Rxe5 c6 * [ECO "C89"] [Opening "Ruy Lopez"] [Variation "Marshall, Kevitz variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d5 exd5 Nxd5 Nxe5 Nxe5 Rxe5 c6 Bxd5 cxd5 d4 Bd6 Re3 * [ECO "C89"] [Opening "Ruy Lopez"] [Variation "Marshall, main line, 12.d2d4"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d5 exd5 Nxd5 Nxe5 Nxe5 Rxe5 c6 d4 * [ECO "C89"] [Opening "Ruy Lopez"] [Variation "Marshall, main line, 14...Qh3"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d5 exd5 Nxd5 Nxe5 Nxe5 Rxe5 c6 d4 Bd6 Re1 Qh4 g3 Qh3 * [ECO "C89"] [Opening "Ruy Lopez"] [Variation "Marshall, main line, Spassky variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d5 exd5 Nxd5 Nxe5 Nxe5 Rxe5 c6 d4 Bd6 Re1 Qh4 g3 Qh3 Be3 Bg4 Qd3 Rae8 Nd2 Re6 a4 Qh5 * [ECO "C89"] [Opening "Ruy Lopez"] [Variation "Marshall, Herman Steiner variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d5 exd5 e4 * [ECO "C90"] [Opening "Ruy Lopez"] [Variation "closed (with ...d6)"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 * [ECO "C90"] [Opening "Ruy Lopez"] [Variation "closed, Pilnik variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 d3 * [ECO "C90"] [Opening "Ruy Lopez"] [Variation "closed, Lutikov variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 Bc2 * [ECO "C90"] [Opening "Ruy Lopez"] [Variation "closed, Suetin variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 a3 * [ECO "C91"] [Opening "Ruy Lopez"] [Variation "closed, 9.d4"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 d4 * [ECO "C91"] [Opening "Ruy Lopez"] [Variation "closed, Bogolyubov variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 d4 Bg4 * [ECO "C92"] [Opening "Ruy Lopez"] [Variation "closed, 9.h3"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 * [ECO "C92"] [Opening "Ruy Lopez"] [Variation "closed, Keres (9...a5) variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 a5 * [ECO "C92"] [Opening "Ruy Lopez"] [Variation "closed, Kholmov variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Be6 * [ECO "C92"] [Opening "Ruy Lopez"] [Variation "closed, Ragozin-Petrosian (`Keres') variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Nd7 * [ECO "C92"] [Opening "Ruy Lopez"] [Variation "closed, Flohr-Zaitsev system (Lenzerheide variation)"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Bb7 * [ECO "C93"] [Opening "Ruy Lopez"] [Variation "closed, Smyslov defence"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 h6 * [ECO "C94"] [Opening "Ruy Lopez"] [Variation "closed, Breyer defence"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Nb8 * [ECO "C95"] [Opening "Ruy Lopez"] [Variation "closed, Breyer, 10.d4"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Nb8 d4 * [ECO "C95"] [Opening "Ruy Lopez"] [Variation "closed, Breyer, Borisenko variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Nb8 d4 Nbd7 * [ECO "C95"] [Opening "Ruy Lopez"] [Variation "closed, Breyer, Gligoric variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Nb8 d4 Nbd7 Nbd2 Bb7 Bc2 c5 * [ECO "C95"] [Opening "Ruy Lopez"] [Variation "closed, Breyer, Simagin variation"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Nb8 d4 Nbd7 Nh4 * [ECO "C96"] [Opening "Ruy Lopez"] [Variation "closed (8...Na5)"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Na5 Bc2 * [ECO "C96"] [Opening "Ruy Lopez"] [Variation "closed, Rossolimo defence"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Na5 Bc2 c6 d4 Qc7 * [ECO "C96"] [Opening "Ruy Lopez"] [Variation "closed (10...c5)"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Na5 Bc2 c5 * [ECO "C96"] [Opening "Ruy Lopez"] [Variation "closed, Borisenko defence"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Na5 Bc2 c5 d4 Nc6 * [ECO "C96"] [Opening "Ruy Lopez"] [Variation "closed, Keres (...Nd7) defence"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Na5 Bc2 c5 d4 Nd7 * [ECO "C97"] [Opening "Ruy Lopez"] [Variation "closed, Chigorin defence"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Na5 Bc2 c5 d4 Qc7 * [ECO "C97"] [Opening "Ruy Lopez"] [Variation "closed, Chigorin, Yugoslav system"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Na5 Bc2 c5 d4 Qc7 Nbd2 Bd7 Nf1 Rfe8 Ne3 g6 * [ECO "C98"] [Opening "Ruy Lopez"] [Variation "closed, Chigorin, 12...Nc6"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Na5 Bc2 c5 d4 Qc7 Nbd2 Nc6 * [ECO "C98"] [Opening "Ruy Lopez"] [Variation "closed, Chigorin, Rauzer attack"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Na5 Bc2 c5 d4 Qc7 Nbd2 Nc6 dxc5 * [ECO "C99"] [Opening "Ruy Lopez"] [Variation "closed, Chigorin, 12...c5d4"] e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 h3 Na5 Bc2 c5 d4 Qc7 Nbd2 cxd4 cxd4 * [ECO "D00"] [Opening "Queen's pawn game"] d4 d5 * [ECO "D00"] [Opening "Queen's pawn, Mason variation"] d4 d5 Bf4 * [ECO "D00"] [Opening "Queen's pawn, Mason variation, Steinitz counter-gambit"] d4 d5 Bf4 c5 * [ECO "D00"] [Opening "Levitsky attack (Queen's bishop attack)"] d4 d5 Bg5 * [ECO "D00"] [Opening "Blackmar gambit"] d4 d5 e4 * [ECO "D00"] [Opening "Queen's pawn"] [Variation "stonewall attack"] d4 d5 e3 Nf6 Bd3 * [ECO "D00"] [Opening "Queen's pawn"] [Variation "Chigorin variation"] d4 d5 Nc3 * [ECO "D00"] [Opening "Queen's pawn"] [Variation "Anti-Veresov"] d4 d5 Nc3 Bg4 * [ECO "D00"] [Opening "Blackmar-Diemer gambit"] d4 d5 Nc3 Nf6 e4 * [ECO "D00"] [Opening "Blackmar-Diemer"] [Variation "Euwe defence"] d4 d5 Nc3 Nf6 e4 dxe4 f3 exf3 Nxf3 e6 * [ECO "D00"] [Opening "Blackmar-Diemer"] [Variation "Lemberg counter-gambit"] d4 d5 Nc3 Nf6 e4 e5 * [ECO "D01"] [Opening "Richter-Veresov attack"] d4 d5 Nc3 Nf6 Bg5 * [ECO "D01"] [Opening "Richter-Veresov attack, Veresov variation"] d4 d5 Nc3 Nf6 Bg5 Bf5 Bxf6 * [ECO "D01"] [Opening "Richter-Veresov attack, Richter variation"] d4 d5 Nc3 Nf6 Bg5 Bf5 f3 * [ECO "D02"] [Opening "Queen's pawn game"] d4 d5 Nf3 * [ECO "D02"] [Opening "Queen's pawn game, Chigorin variation"] d4 d5 Nf3 Nc6 * [ECO "D02"] [Opening "Queen's pawn game, Krause variation"] d4 d5 Nf3 c5 * [ECO "D02"] [Opening "Queen's pawn game"] d4 d5 Nf3 Nf6 * [ECO "D02"] [Opening "Queen's bishop game"] d4 d5 Nf3 Nf6 Bf4 * [ECO "D03"] [Opening "Torre attack (Tartakower variation)"] d4 d5 Nf3 Nf6 Bg5 * [ECO "D04"] [Opening "Queen's pawn game"] d4 d5 Nf3 Nf6 e3 * [ECO "D05"] [Opening "Queen's pawn game"] d4 d5 Nf3 Nf6 e3 e6 * [ECO "D05"] [Opening "Queen's pawn game, Zukertort variation"] d4 d5 Nf3 Nf6 e3 e6 Nbd2 c5 b3 * [ECO "D05"] [Opening "Queen's pawn game"] d4 d5 Nf3 Nf6 e3 e6 Bd3 * [ECO "D05"] [Opening "Queen's pawn game, Rubinstein (Colle-Zukertort) variation"] d4 d5 Nf3 Nf6 e3 e6 Bd3 c5 b3 * [ECO "D05"] [Opening "Colle system"] d4 d5 Nf3 Nf6 e3 e6 Bd3 c5 c3 * [ECO "D06"] [Opening "Queen's Gambit"] d4 d5 c4 * [ECO "D06"] [Opening "QGD"] [Variation "Grau (Sahovic) defence"] d4 d5 c4 Bf5 * [ECO "D06"] [Opening "QGD"] [Variation "Marshall defence"] d4 d5 c4 Nf6 * [ECO "D06"] [Opening "QGD"] [Variation "symmetrical (Austrian) defence"] d4 d5 c4 c5 * [ECO "D07"] [Opening "QGD"] [Variation "Chigorin defence"] d4 d5 c4 Nc6 * [ECO "D07"] [Opening "QGD"] [Variation "Chigorin defence, Janowski variation"] d4 d5 c4 Nc6 Nc3 dxc4 Nf3 * [ECO "D08"] [Opening "QGD"] [Variation "Albin counter-gambit"] d4 d5 c4 e5 * [ECO "D08"] [Opening "QGD"] [Variation "Albin counter-gambit, Lasker trap"] d4 d5 c4 e5 dxe5 d4 e3 Bb4+ Bd2 dxe3 * [ECO "D08"] [Opening "QGD"] [Variation "Albin counter-gambit"] d4 d5 c4 e5 dxe5 d4 Nf3 * [ECO "D08"] [Opening "QGD"] [Variation "Albin counter-gambit, Alapin variation"] d4 d5 c4 e5 dxe5 d4 Nf3 Nc6 Nbd2 * [ECO "D08"] [Opening "QGD"] [Variation "Albin counter-gambit, Krenosz variation"] d4 d5 c4 e5 dxe5 d4 Nf3 Nc6 Nbd2 Bg4 h3 Bxf3 Nxf3 Bb4+ Bd2 Qe7 * [ECO "D08"] [Opening "QGD"] [Variation "Albin counter-gambit, Janowski variation"] d4 d5 c4 e5 dxe5 d4 Nf3 Nc6 Nbd2 f6 * [ECO "D08"] [Opening "QGD"] [Variation "Albin counter-gambit, Balogh variation"] d4 d5 c4 e5 dxe5 d4 Nf3 Nc6 Nbd2 Qe7 * [ECO "D09"] [Opening "QGD"] [Variation "Albin counter-gambit, 5.g3"] d4 d5 c4 e5 dxe5 d4 Nf3 Nc6 g3 * [ECO "D10"] [Opening "QGD Slav defence"] d4 d5 c4 c6 * [ECO "D10"] [Opening "QGD Slav defence, Alekhine variation"] d4 d5 c4 c6 Nc3 dxc4 e4 * [ECO "D10"] [Opening "QGD Slav"] [Variation "Winawer counter-gambit"] d4 d5 c4 c6 Nc3 e5 * [ECO "D10"] [Opening "QGD Slav defence"] [Variation "exchange variation"] d4 d5 c4 c6 cxd5 * [ECO "D11"] [Opening "QGD Slav"] [Variation "3.Nf3"] d4 d5 c4 c6 Nf3 * [ECO "D11"] [Opening "QGD Slav"] [Variation "Breyer variation"] d4 d5 c4 c6 Nf3 Nf6 Nbd2 * [ECO "D11"] [Opening "QGD Slav"] [Variation "4.e3"] d4 d5 c4 c6 Nf3 Nf6 e3 * [ECO "D12"] [Opening "QGD Slav"] [Variation "4.e3 Bf5"] d4 d5 c4 c6 Nf3 Nf6 e3 Bf5 * [ECO "D12"] [Opening "QGD Slav"] [Variation "Landau variation"] d4 d5 c4 c6 Nf3 Nf6 e3 Bf5 cxd5 cxd5 Qb3 Qc8 Bd2 e6 Na3 * [ECO "D12"] [Opening "QGD Slav"] [Variation "exchange variation"] d4 d5 c4 c6 Nf3 Nf6 e3 Bf5 cxd5 cxd5 Nc3 * [ECO "D12"] [Opening "QGD Slav"] [Variation "Amsterdam variation"] d4 d5 c4 c6 Nf3 Nf6 e3 Bf5 cxd5 cxd5 Nc3 e6 Ne5 Nfd7 * [ECO "D13"] [Opening "QGD Slav"] [Variation "exchange variation"] d4 d5 c4 c6 Nf3 Nf6 cxd5 cxd5 * [ECO "D14"] [Opening "QGD Slav"] [Variation "exchange variation, 6.Bf4 Bf5"] d4 d5 c4 c6 Nf3 Nf6 cxd5 cxd5 Nc3 Nc6 Bf4 Bf5 * [ECO "D14"] [Opening "QGD Slav"] [Variation "exchange, Trifunovic variation"] d4 d5 c4 c6 Nf3 Nf6 cxd5 cxd5 Nc3 Nc6 Bf4 Bf5 e3 e6 Qb3 Bb4 * [ECO "D15"] [Opening "QGD Slav"] [Variation "4.Nc3"] d4 d5 c4 c6 Nf3 Nf6 Nc3 * [ECO "D15"] [Opening "QGD Slav"] [Variation "Suechting variation"] d4 d5 c4 c6 Nf3 Nf6 Nc3 Qb6 * [ECO "D15"] [Opening "QGD Slav"] [Variation "Schlechter variation"] d4 d5 c4 c6 Nf3 Nf6 Nc3 g6 * [ECO "D15"] [Opening "QGD Slav accepted"] d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 * [ECO "D15"] [Opening "QGD Slav"] [Variation "5.e3 (Alekhine variation)"] d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 e3 * [ECO "D15"] [Opening "QGD Slav"] [Variation "Slav gambit"] d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 e4 * [ECO "D15"] [Opening "QGD Slav"] [Variation "Tolush-Geller gambit"] d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 e4 b5 e5 * [ECO "D16"] [Opening "QGD Slav accepted"] [Variation "Alapin variation"] d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 * [ECO "D16"] [Opening "QGD Slav"] [Variation "Smyslov variation"] d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Na6 e4 Bg4 * [ECO "D16"] [Opening "QGD Slav"] [Variation "Soultanbeieff variation"] d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 e6 * [ECO "D16"] [Opening "QGD Slav"] [Variation "Steiner variation"] d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bg4 * [ECO "D17"] [Opening "QGD Slav"] [Variation "Czech defence"] d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 * [ECO "D17"] [Opening "QGD Slav"] [Variation "Krause attack"] d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 Ne5 * [ECO "D17"] [Opening "QGD Slav"] [Variation "Carlsbad variation"] d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 Ne5 Nbd7 Nxc4 Qc7 g3 e5 * [ECO "D17"] [Opening "QGD Slav"] [Variation "Wiesbaden variation"] d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 Ne5 e6 * [ECO "D18"] [Opening "QGD Slav"] [Variation "Dutch variation"] d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 e3 * [ECO "D18"] [Opening "QGD Slav"] [Variation "Dutch, Lasker variation"] d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 e3 Na6 * [ECO "D19"] [Opening "QGD Slav"] [Variation "Dutch variation"] d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 e3 e6 Bxc4 Bb4 O-O * [ECO "D19"] [Opening "QGD Slav"] [Variation "Dutch variation, main line"] d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 e3 e6 Bxc4 Bb4 O-O O-O Qe2 * [ECO "D19"] [Opening "QGD Slav"] [Variation "Dutch, Saemisch variation"] d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 e3 e6 Bxc4 Bb4 O-O O-O Qe2 Ne4 g4 * [ECO "D20"] [Opening "Queen's gambit accepted"] d4 d5 c4 dxc4 * [ECO "D20"] [Opening "QGA"] [Variation "3.e4"] d4 d5 c4 dxc4 e4 * [ECO "D20"] [Opening "QGA"] [Variation "Linares variation"] d4 d5 c4 dxc4 e4 c5 d5 Nf6 Nc3 b5 * [ECO "D20"] [Opening "QGA"] [Variation "Schwartz defence"] d4 d5 c4 dxc4 e4 f5 * [ECO "D21"] [Opening "QGA"] [Variation "3.Nf3"] d4 d5 c4 dxc4 Nf3 * [ECO "D21"] [Opening "QGA"] [Variation "Ericson variation"] d4 d5 c4 dxc4 Nf3 b5 * [ECO "D21"] [Opening "QGA"] [Variation "Alekhine defense, Borisenko-Furman variation"] d4 d5 c4 dxc4 Nf3 a6 e4 * [ECO "D22"] [Opening "QGA"] [Variation "Alekhine defence"] d4 d5 c4 dxc4 Nf3 a6 * [ECO "D22"] [Opening "QGA"] [Variation "Alekhine defence, Alatortsev variation"] d4 d5 c4 dxc4 Nf3 a6 e3 Bg4 Bxc4 e6 d5 * [ECO "D22"] [Opening "QGA"] [Variation "Haberditz variation"] d4 d5 c4 dxc4 Nf3 a6 e3 b5 * [ECO "D23"] [Opening "Queen's gambit accepted"] d4 d5 c4 dxc4 Nf3 Nf6 * [ECO "D23"] [Opening "QGA"] [Variation "Mannheim variation"] d4 d5 c4 dxc4 Nf3 Nf6 Qa4+ * [ECO "D24"] [Opening "QGA, 4.Nc3"] d4 d5 c4 dxc4 Nf3 Nf6 Nc3 * [ECO "D24"] [Opening "QGA, Bogolyubov variation"] d4 d5 c4 dxc4 Nf3 Nf6 Nc3 a6 e4 * [ECO "D25"] [Opening "QGA, 4.e3"] d4 d5 c4 dxc4 Nf3 Nf6 e3 * [ECO "D25"] [Opening "QGA, Smyslov variation"] d4 d5 c4 dxc4 Nf3 Nf6 e3 g6 * [ECO "D25"] [Opening "QGA, Janowsky-Larsen variation"] d4 d5 c4 dxc4 Nf3 Nf6 e3 Bg4 * [ECO "D25"] [Opening "QGA, Flohr variation"] d4 d5 c4 dxc4 Nf3 Nf6 e3 Be6 * [ECO "D26"] [Opening "QGA"] [Variation "4...e6"] d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 * [ECO "D26"] [Opening "QGA"] [Variation "classical variation"] d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 * [ECO "D26"] [Opening "QGA"] [Variation "classical, Furman variation"] d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 Qe2 a6 dxc5 Bxc5 O-O Nc6 e4 b5 e5 * [ECO "D26"] [Opening "QGA"] [Variation "classical variation, 6.O-O"] d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O * [ECO "D26"] [Opening "QGA"] [Variation "classical, Steinitz variation"] d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O cxd4 * [ECO "D27"] [Opening "QGA"] [Variation "classical, 6...a6"] d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O a6 * [ECO "D27"] [Opening "QGA"] [Variation "classical, Rubinstein variation"] d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O a6 a4 * [ECO "D27"] [Opening "QGA"] [Variation "classical, Geller variation"] d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O a6 e4 * [ECO "D28"] [Opening "QGA"] [Variation "classical, 7.Qe2"] d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O a6 Qe2 * [ECO "D28"] [Opening "QGA"] [Variation "classical, 7...b5"] d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O a6 Qe2 b5 * [ECO "D28"] [Opening "QGA"] [Variation "classical, Flohr variation"] d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O a6 Qe2 b5 Bb3 Nc6 Rd1 c4 Bc2 Nb4 Nc3 Nxc2 Qxc2 Bb7 d5 Qc7 * [ECO "D29"] [Opening "QGA"] [Variation "classical, 8...Bb7"] d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O a6 Qe2 b5 Bb3 Bb7 * [ECO "D29"] [Opening "QGA"] [Variation "classical, Smyslov variation"] d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O a6 Qe2 b5 Bb3 Bb7 Rd1 Nbd7 Nc3 Bd6 * [ECO "D30"] [Opening "Queen's gambit declined"] d4 d5 c4 e6 * [ECO "D30"] [Opening "QGD Slav"] d4 d5 c4 e6 Nf3 Nf6 e3 c6 Nbd2 * [ECO "D30"] [Opening "QGD"] [Variation "Stonewall variation"] d4 d5 c4 e6 Nf3 Nf6 e3 c6 Nbd2 Ne4 Bd3 f5 * [ECO "D30"] [Opening "QGD Slav"] d4 d5 c4 e6 Nf3 Nf6 e3 c6 Nbd2 Nbd7 * [ECO "D30"] [Opening "QGD Slav"] [Variation "Semmering variation"] d4 d5 c4 e6 Nf3 Nf6 e3 c6 Nbd2 Nbd7 Bd3 c5 * [ECO "D30"] [Opening "QGD"] [Variation "Spielmann variation"] d4 d5 c4 e6 Nf3 Nf6 e3 c6 Nbd2 g6 * [ECO "D30"] [Opening "QGD"] d4 d5 c4 e6 Nf3 Nf6 Bg5 * [ECO "D30"] [Opening "QGD"] [Variation "Capablanca variation"] d4 d5 c4 e6 Nf3 Nf6 Bg5 Nbd7 e3 c6 Nbd2 * [ECO "D30"] [Opening "QGD"] [Variation "Vienna variation"] d4 d5 c4 e6 Nf3 Nf6 Bg5 Bb4+ * [ECO "D30"] [Opening "QGD"] [Variation "Capablanca-Duras variation"] d4 d5 c4 e6 Nf3 Nf6 Bg5 h6 * [ECO "D30"] [Opening "QGD"] [Variation "Hastings variation"] d4 d5 c4 e6 Nf3 Nf6 Bg5 h6 Bxf6 Qxf6 Nc3 c6 Qb3 * [ECO "D31"] [Opening "QGD"] [Variation "3.Nc3"] d4 d5 c4 e6 Nc3 * [ECO "D31"] [Opening "QGD"] [Variation "Janowski variation"] d4 d5 c4 e6 Nc3 a6 * [ECO "D31"] [Opening "QGD"] [Variation "Alapin variation"] d4 d5 c4 e6 Nc3 b6 * [ECO "D31"] [Opening "QGD"] [Variation "Charousek (Petrosian) variation"] d4 d5 c4 e6 Nc3 Be7 * [ECO "D31"] [Opening "QGD"] [Variation "semi-Slav"] d4 d5 c4 e6 Nc3 c6 * [ECO "D31"] [Opening "QGD"] [Variation "semi-Slav, Noteboom variation"] d4 d5 c4 e6 Nc3 c6 Nf3 dxc4 * [ECO "D31"] [Opening "QGD"] [Variation "semi-Slav, Koomen variation"] d4 d5 c4 e6 Nc3 c6 Nf3 dxc4 a4 Bb4 e3 b5 Bd2 Qe7 * [ECO "D31"] [Opening "QGD"] [Variation "semi-Slav, Junge variation"] d4 d5 c4 e6 Nc3 c6 Nf3 dxc4 a4 Bb4 e3 b5 Bd2 Qb6 * [ECO "D31"] [Opening "QGD"] [Variation "semi-Slav, Abrahams variation"] d4 d5 c4 e6 Nc3 c6 Nf3 dxc4 a4 Bb4 e3 b5 Bd2 a5 * [ECO "D31"] [Opening "QGD"] [Variation "semi-Slav, Marshall gambit"] d4 d5 c4 e6 Nc3 c6 e4 * [ECO "D32"] [Opening "QGD"] [Variation "Tarrasch defence"] d4 d5 c4 e6 Nc3 c5 * [ECO "D32"] [Opening "QGD"] [Variation "Tarrasch, von Hennig-Schara gambit"] d4 d5 c4 e6 Nc3 c5 cxd5 cxd4 * [ECO "D32"] [Opening "QGD"] [Variation "Tarrasch defence, 4.cd ed"] d4 d5 c4 e6 Nc3 c5 cxd5 exd5 * [ECO "D32"] [Opening "QGD"] [Variation "Tarrasch defence, Tarrasch gambit"] d4 d5 c4 e6 Nc3 c5 cxd5 exd5 dxc5 d4 Na4 b5 * [ECO "D32"] [Opening "QGD"] [Variation "Tarrasch defence, Marshall gambit"] d4 d5 c4 e6 Nc3 c5 cxd5 exd5 e4 * [ECO "D32"] [Opening "QGD"] [Variation "Tarrasch defence"] d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 * [ECO "D33"] [Opening "QGD"] [Variation "Tarrasch, Schlechter-Rubinstein system"] d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 * [ECO "D33"] [Opening "QGD"] [Variation "Tarrasch, Folkestone (Swedish) variation"] d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 c4 * [ECO "D33"] [Opening "QGD"] [Variation "Tarrasch, Schlechter-Rubinstein system, Rey Ardid variation"] d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 c4 e4 * [ECO "D33"] [Opening "QGD"] [Variation "Tarrasch, Prague variation"] d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 * [ECO "D33"] [Opening "QGD"] [Variation "Tarrasch, Wagner variation"] d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 Bg2 Bg4 * [ECO "D34"] [Opening "QGD"] [Variation "Tarrasch, Prague variation, 7...Be7"] d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 Bg2 Be7 * [ECO "D34"] [Opening "QGD"] [Variation "Tarrasch, Prague variation, Normal position"] d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 Bg2 Be7 O-O O-O * [ECO "D34"] [Opening "QGD"] [Variation "Tarrasch, Reti variation"] d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 Bg2 Be7 O-O O-O dxc5 Bxc5 Na4 * [ECO "D34"] [Opening "QGD"] [Variation "Tarrasch, Prague variation, 9.Bg5"] d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 Bg2 Be7 O-O O-O Bg5 * [ECO "D34"] [Opening "QGD"] [Variation "Tarrasch, Bogolyubov variation"] d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 Bg2 Be7 O-O O-O Bg5 Be6 Rc1 c4 * [ECO "D34"] [Opening "QGD"] [Variation "Tarrasch, Stoltz variation"] d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 Bg2 Be7 O-O O-O Bg5 Be6 Rc1 b6 * [ECO "D35"] [Opening "QGD"] [Variation "3...Nf6"] d4 d5 c4 e6 Nc3 Nf6 * [ECO "D35"] [Opening "QGD"] [Variation "Harrwitz attack"] d4 d5 c4 e6 Nc3 Nf6 Bf4 * [ECO "D35"] [Opening "QGD"] [Variation "exchange variation"] d4 d5 c4 e6 Nc3 Nf6 cxd5 * [ECO "D35"] [Opening "QGD"] [Variation "exchange, Saemisch variation"] d4 d5 c4 e6 Nc3 Nf6 cxd5 exd5 Nf3 Nbd7 Bf4 * [ECO "D35"] [Opening "QGD"] [Variation "exchange, positional line"] d4 d5 c4 e6 Nc3 Nf6 cxd5 exd5 Bg5 * [ECO "D35"] [Opening "QGD"] [Variation "exchange, chameleon variation"] d4 d5 c4 e6 Nc3 Nf6 cxd5 exd5 Bg5 Be7 e3 O-O Bd3 Nbd7 Qc2 Re8 Nge2 Nf8 O-O-O * [ECO "D35"] [Opening "QGD"] [Variation "exchange, positional line, 5...c6"] d4 d5 c4 e6 Nc3 Nf6 cxd5 exd5 Bg5 c6 * [ECO "D36"] [Opening "QGD"] [Variation "exchange, positional line, 6.Qc2"] d4 d5 c4 e6 Nc3 Nf6 cxd5 exd5 Bg5 c6 Qc2 * [ECO "D37"] [Opening "QGD"] [Variation "4.Nf3"] d4 d5 c4 e6 Nc3 Nf6 Nf3 * [ECO "D37"] [Opening "QGD"] [Variation "classical variation (5.Bf4)"] d4 d5 c4 e6 Nc3 Nf6 Nf3 Be7 Bf4 * [ECO "D38"] [Opening "QGD"] [Variation "Ragozin variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 Bb4 * [ECO "D39"] [Opening "QGD"] [Variation "Ragozin, Vienna variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 Bb4 Bg5 dxc4 * [ECO "D40"] [Opening "QGD"] [Variation "Semi-Tarrasch defence"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c5 * [ECO "D40"] [Opening "QGD"] [Variation "Semi-Tarrasch, symmetrical variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c5 e3 Nc6 Bd3 Bd6 O-O O-O * [ECO "D40"] [Opening "QGD"] [Variation "Semi-Tarrasch, Levenfish variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c5 e3 Nc6 Bd3 Bd6 O-O O-O Qe2 Qe7 dxc5 Bxc5 e4 * [ECO "D40"] [Opening "QGD"] [Variation "Semi-Tarrasch defence, Pillsbury variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c5 Bg5 * [ECO "D41"] [Opening "QGD"] [Variation "Semi-Tarrasch, 5.cd"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c5 cxd5 * [ECO "D41"] [Opening "QGD"] [Variation "Semi-Tarrasch, Kmoch variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c5 cxd5 Nxd5 e4 Nxc3 bxc3 cxd4 cxd4 Bb4+ Bd2 Bxd2+ Qxd2 O-O Bb5 * [ECO "D41"] [Opening "QGD"] [Variation "Semi-Tarrasch, San Sebastian variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c5 cxd5 Nxd5 e4 Nxc3 bxc3 cxd4 cxd4 Bb4+ Bd2 Qa5 * [ECO "D41"] [Opening "QGD"] [Variation "Semi-Tarrasch with e3"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c5 cxd5 Nxd5 e3 * [ECO "D42"] [Opening "QGD"] [Variation "Semi-Tarrasch, 7.Bd3"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c5 cxd5 Nxd5 e3 Nc6 Bd3 * [ECO "D43"] [Opening "QGD semi-Slav"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 * [ECO "D43"] [Opening "QGD semi-Slav"] [Variation "Hastings variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 Bg5 h6 Bxf6 Qxf6 Qb3 * [ECO "D44"] [Opening "QGD semi-Slav"] [Variation "5.Bg5 dc"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 Bg5 dxc4 * [ECO "D44"] [Opening "QGD semi-Slav"] [Variation "Botvinnik system (anti-Meran)"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 Bg5 dxc4 e4 * [ECO "D44"] [Opening "QGD semi-Slav"] [Variation "Ekstrom variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 Bg5 dxc4 e4 b5 e5 h6 Bh4 g5 exf6 gxh4 Ne5 * [ECO "D44"] [Opening "QGD semi-Slav"] [Variation "anti-Meran gambit"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 Bg5 dxc4 e4 b5 e5 h6 Bh4 g5 Nxg5 * [ECO "D44"] [Opening "QGD semi-Slav"] [Variation "anti-Meran, Lilienthal variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 Bg5 dxc4 e4 b5 e5 h6 Bh4 g5 Nxg5 hxg5 Bxg5 Nbd7 g3 * [ECO "D44"] [Opening "QGD semi-Slav"] [Variation "anti-Meran, Szabo variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 Bg5 dxc4 e4 b5 e5 h6 Bh4 g5 Nxg5 hxg5 Bxg5 Nbd7 Qf3 * [ECO "D44"] [Opening "QGD semi-Slav"] [Variation "anti-Meran, Alatortsev system"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 Bg5 dxc4 e4 b5 e5 h6 Bh4 g5 Nxg5 Nd5 * [ECO "D45"] [Opening "QGD semi-Slav"] [Variation "5.e3"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 * [ECO "D45"] [Opening "QGD semi-Slav"] [Variation "stonewall defence"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Ne4 Bd3 f5 * [ECO "D45"] [Opening "QGD semi-Slav"] [Variation "accelerated Meran (Alekhine variation)"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 a6 * [ECO "D45"] [Opening "QGD semi-Slav"] [Variation "5...Nd7"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 * [ECO "D45"] [Opening "QGD semi-Slav"] [Variation "Stoltz variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Qc2 * [ECO "D45"] [Opening "QGD semi-Slav"] [Variation "Rubinstein (anti-Meran) system"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Ne5 * [ECO "D46"] [Opening "QGD semi-Slav"] [Variation "6.Bd3"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 * [ECO "D46"] [Opening "QGD semi-Slav"] [Variation "Bogolyubov variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 Be7 * [ECO "D46"] [Opening "QGD semi-Slav"] [Variation "Romih variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 Bb4 * [ECO "D46"] [Opening "QGD semi-Slav"] [Variation "Chigorin defence"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 Bd6 * [ECO "D47"] [Opening "QGD semi-Slav"] [Variation "7.Bc4"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 * [ECO "D47"] [Opening "QGD semi-Slav"] [Variation "Meran variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 * [ECO "D47"] [Opening "QGD semi-Slav"] [Variation "neo-Meran (Lundin variation)"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 b4 * [ECO "D47"] [Opening "QGD semi-Slav"] [Variation "Meran, Wade variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 Bb7 * [ECO "D48"] [Opening "QGD semi-Slav"] [Variation "Meran, 8...a6"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 * [ECO "D48"] [Opening "QGD semi-Slav"] [Variation "Meran, Pirc variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 e4 b4 * [ECO "D48"] [Opening "QGD semi-Slav"] [Variation "Meran"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 e4 c5 * [ECO "D48"] [Opening "QGD semi-Slav"] [Variation "Meran, Reynolds' variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 e4 c5 d5 * [ECO "D48"] [Opening "QGD semi-Slav"] [Variation "Meran, old main line"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 e4 c5 e5 * [ECO "D49"] [Opening "QGD semi-Slav"] [Variation "Meran, Blumenfeld variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 e4 c5 e5 cxd4 Nxb5 * [ECO "D49"] [Opening "QGD semi-Slav"] [Variation "Meran, Rabinovich variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 e4 c5 e5 cxd4 Nxb5 Ng4 * [ECO "D49"] [Opening "QGD semi-Slav"] [Variation "Meran, Sozin variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 e4 c5 e5 cxd4 Nxb5 Nxe5 * [ECO "D49"] [Opening "QGD semi-Slav"] [Variation "Meran, Stahlberg variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 e4 c5 e5 cxd4 Nxb5 Nxe5 Nxe5 axb5 Qf3 * [ECO "D49"] [Opening "QGD semi-Slav"] [Variation "Meran, Sozin variation"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 e4 c5 e5 cxd4 Nxb5 Nxe5 Nxe5 axb5 O-O * [ECO "D49"] [Opening "QGD semi-Slav"] [Variation "Meran, Rellstab attack"] d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 e4 c5 e5 cxd4 Nxb5 Nxe5 Nxe5 axb5 O-O Qd5 Qe2 Ba6 Bg5 * [ECO "D50"] [Opening "QGD"] [Variation "4.Bg5"] d4 d5 c4 e6 Nc3 Nf6 Bg5 * [ECO "D50"] [Opening "QGD"] [Variation "Been-Koomen variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 c5 * [ECO "D50"] [Opening "QGD"] [Variation "Semi-Tarrasch, Krause variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 c5 Nf3 cxd4 Nxd4 e5 Ndb5 a6 Qa4 * [ECO "D50"] [Opening "QGD"] [Variation "Semi-Tarrasch, Primitive Pillsbury variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 c5 Nf3 cxd4 Qxd4 * [ECO "D50"] [Opening "QGD"] [Variation "Semi-Tarrasch"] d4 d5 c4 e6 Nc3 Nf6 Bg5 c5 cxd5 * [ECO "D50"] [Opening "QGD"] [Variation "Canal (Venice) variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 c5 cxd5 Qb6 * [ECO "D51"] [Opening "QGD"] [Variation "4.Bg5 Nbd7"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 * [ECO "D51"] [Opening "QGD"] [Variation "Rochlin variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 Nf3 c6 Rc1 Qa5 Bd2 * [ECO "D51"] [Opening "QGD"] [Variation "Alekhine variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 Nf3 c6 e4 * [ECO "D51"] [Opening "QGD"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 * [ECO "D51"] [Opening "QGD"] [Variation "Manhattan variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 Bb4 * [ECO "D51"] [Opening "QGD"] [Variation "5...c6"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 c6 * [ECO "D51"] [Opening "QGD"] [Variation "Capablanca anti-Cambridge Springs variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 c6 a3 * [ECO "D52"] [Opening "QGD"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 c6 Nf3 * [ECO "D52"] [Opening "QGD"] [Variation "Cambridge Springs defence"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 c6 Nf3 Qa5 * [ECO "D52"] [Opening "QGD"] [Variation "Cambridge Springs defence, Bogoljubow variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 c6 Nf3 Qa5 Nd2 Bb4 Qc2 * [ECO "D52"] [Opening "QGD"] [Variation "Cambridge Springs defence, Argentine variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 c6 Nf3 Qa5 Nd2 Bb4 Qc2 O-O Bh4 * [ECO "D52"] [Opening "QGD"] [Variation "Cambridge Springs defence, Rubinstein variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 c6 Nf3 Qa5 Nd2 dxc4 * [ECO "D52"] [Opening "QGD"] [Variation "Cambridge Springs defence, Capablanca variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 c6 Nf3 Qa5 Bxf6 * [ECO "D52"] [Opening "QGD"] [Variation "Cambridge Springs defence, 7.cd"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 c6 Nf3 Qa5 cxd5 * [ECO "D52"] [Opening "QGD"] [Variation "Cambridge Springs defence, Yugoslav variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 c6 Nf3 Qa5 cxd5 Nxd5 * [ECO "D53"] [Opening "QGD"] [Variation "4.Bg5 Be7"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 * [ECO "D53"] [Opening "QGD"] [Variation "Lasker variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 Ne4 * [ECO "D53"] [Opening "QGD"] [Variation "4.Bg5 Be7, 5.e3 O-O"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O * [ECO "D54"] [Opening "QGD"] [Variation "Anti-neo-orthodox variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Rc1 * [ECO "D55"] [Opening "QGD"] [Variation "6.Nf3"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 * [ECO "D55"] [Opening "QGD"] [Variation "Pillsbury attack"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 b6 Bd3 Bb7 cxd5 exd5 Ne5 * [ECO "D55"] [Opening "QGD"] [Variation "Neo-orthodox variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 * [ECO "D55"] [Opening "QGD"] [Variation "Neo-orthodox variation, 7.Bxf6"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bxf6 * [ECO "D55"] [Opening "QGD"] [Variation "Petrosian variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bxf6 Bxf6 Rc1 c6 Bd3 Nd7 O-O dxc4 Bxc4 * [ECO "D55"] [Opening "QGD"] [Variation "Neo-orthodox variation, 7.Bh4"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bh4 * [ECO "D56"] [Opening "QGD"] [Variation "Lasker defence"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bh4 Ne4 * [ECO "D56"] [Opening "QGD"] [Variation "Lasker defence, Teichmann variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bh4 Ne4 Bxe7 Qxe7 Qc2 * [ECO "D56"] [Opening "QGD"] [Variation "Lasker defence, Russian variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bh4 Ne4 Bxe7 Qxe7 Qc2 Nf6 Bd3 dxc4 Bxc4 c5 O-O Nc6 Rfd1 Bd7 * [ECO "D57"] [Opening "QGD"] [Variation "Lasker defence, main line"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bh4 Ne4 Bxe7 Qxe7 cxd5 Nxc3 bxc3 * [ECO "D57"] [Opening "QGD"] [Variation "Lasker defence, Bernstein variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bh4 Ne4 Bxe7 Qxe7 cxd5 Nxc3 bxc3 exd5 Qb3 Qd6 * [ECO "D58"] [Opening "QGD"] [Variation "Tartakower (Makagonov-Bondarevsky) system"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bh4 b6 * [ECO "D59"] [Opening "QGD"] [Variation "Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd5"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bh4 b6 cxd5 Nxd5 * [ECO "D59"] [Opening "QGD"] [Variation "Tartakower variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bh4 b6 cxd5 Nxd5 Bxe7 Qxe7 Nxd5 exd5 Rc1 Be6 * [ECO "D60"] [Opening "QGD"] [Variation "Orthodox defence"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 * [ECO "D60"] [Opening "QGD"] [Variation "Orthodox defence, Botvinnik variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Bd3 * [ECO "D60"] [Opening "QGD"] [Variation "Orthodox defence, Rauzer variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Qb3 * [ECO "D61"] [Opening "QGD"] [Variation "Orthodox defence, Rubinstein variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Qc2 * [ECO "D62"] [Opening "QGD"] [Variation "Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Qc2 c5 cxd5 * [ECO "D63"] [Opening "QGD"] [Variation "Orthodox defence, 7.Rc1"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 * [ECO "D63"] [Opening "QGD"] [Variation "Orthodox defence, Pillsbury attack"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 b6 cxd5 exd5 Bd3 * [ECO "D63"] [Opening "QGD"] [Variation "Orthodox defence, Capablanca variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 b6 cxd5 exd5 Bb5 * [ECO "D63"] [Opening "QGD"] [Variation "Orthodox defence, Swiss (Henneberger) variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 a6 * [ECO "D63"] [Opening "QGD"] [Variation "Orthodox defence, Swiss, Karlsbad variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 a6 cxd5 * [ECO "D63"] [Opening "QGD"] [Variation "Orthodox defence"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 * [ECO "D64"] [Opening "QGD"] [Variation "Orthodox defence, Rubinstein attack (with Rc1)"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Qc2 * [ECO "D64"] [Opening "QGD"] [Variation "Orthodox defence, Rubinstein attack, Wolf variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Qc2 Ne4 * [ECO "D64"] [Opening "QGD"] [Variation "Orthodox defence, Rubinstein attack, Karlsbad variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Qc2 a6 * [ECO "D64"] [Opening "QGD"] [Variation "Orthodox defence, Rubinstein attack, Gruenfeld variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Qc2 a6 a3 * [ECO "D65"] [Opening "QGD"] [Variation "Orthodox defence, Rubinstein attack, main line"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Qc2 a6 cxd5 * [ECO "D66"] [Opening "QGD"] [Variation "Orthodox defence, Bd3 line"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 * [ECO "D66"] [Opening "QGD"] [Variation "Orthodox defence, Bd3 line, fianchetto variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 dxc4 Bxc4 b5 * [ECO "D67"] [Opening "QGD"] [Variation "Orthodox defence, Bd3 line, Capablanca freeing manoevre"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 dxc4 Bxc4 Nd5 * [ECO "D67"] [Opening "QGD"] [Variation "Orthodox defence, Bd3 line, Janowski variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 dxc4 Bxc4 Nd5 h4 * [ECO "D67"] [Opening "QGD"] [Variation "Orthodox defence, Bd3 line"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 dxc4 Bxc4 Nd5 Bxe7 Qxe7 * [ECO "D67"] [Opening "QGD"] [Variation "Orthodox defence, Bd3 line, Alekhine variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 dxc4 Bxc4 Nd5 Bxe7 Qxe7 Ne4 * [ECO "D67"] [Opening "QGD"] [Variation "Orthodox defence, Bd3 line, 11.O-O"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 dxc4 Bxc4 Nd5 Bxe7 Qxe7 O-O * [ECO "D68"] [Opening "QGD"] [Variation "Orthodox defence, classical variation"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 dxc4 Bxc4 Nd5 Bxe7 Qxe7 O-O Nxc3 Rxc3 e5 * [ECO "D68"] [Opening "QGD"] [Variation "Orthodox defence, classical, 13.d1b1 (Maroczy)"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 dxc4 Bxc4 Nd5 Bxe7 Qxe7 O-O Nxc3 Rxc3 e5 Qb1 * [ECO "D68"] [Opening "QGD"] [Variation "Orthodox defence, classical, 13.d1c2 (Vidmar)"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 dxc4 Bxc4 Nd5 Bxe7 Qxe7 O-O Nxc3 Rxc3 e5 Qc2 * [ECO "D69"] [Opening "QGD"] [Variation "Orthodox defence, classical, 13.de"] d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 dxc4 Bxc4 Nd5 Bxe7 Qxe7 O-O Nxc3 Rxc3 e5 dxe5 Nxe5 Nxe5 Qxe5 * [ECO "D70"] [Opening "Neo-Gruenfeld defence"] d4 Nf6 c4 g6 f3 d5 * [ECO "D70"] [Opening "Neo-Gruenfeld (Kemeri) defence"] d4 Nf6 c4 g6 g3 d5 * [ECO "D71"] [Opening "Neo-Gruenfeld, 5.cd"] d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 cxd5 Nxd5 * [ECO "D72"] [Opening "Neo-Gruenfeld, 5.cd, main line"] d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 cxd5 Nxd5 e4 Nb6 Ne2 * [ECO "D73"] [Opening "Neo-Gruenfeld, 5.Nf3"] d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3 * [ECO "D74"] [Opening "Neo-Gruenfeld, 6.cd Nxd5, 7.O-O"] d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3 O-O cxd5 Nxd5 O-O * [ECO "D75"] [Opening "Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc3"] d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3 O-O cxd5 Nxd5 O-O c5 Nc3 * [ECO "D75"] [Opening "Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc"] d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3 O-O cxd5 Nxd5 O-O c5 dxc5 * [ECO "D76"] [Opening "Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb6"] d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3 O-O cxd5 Nxd5 O-O Nb6 * [ECO "D77"] [Opening "Neo-Gruenfeld, 6.O-O"] d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3 O-O O-O * [ECO "D78"] [Opening "Neo-Gruenfeld, 6.O-O c6"] d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3 O-O O-O c6 * [ECO "D79"] [Opening "Neo-Gruenfeld, 6.O-O, main line"] d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3 O-O O-O c6 cxd5 cxd5 * [ECO "D80"] [Opening "Gruenfeld defence"] d4 Nf6 c4 g6 Nc3 d5 * [ECO "D80"] [Opening "Gruenfeld"] [Variation "Spike gambit"] d4 Nf6 c4 g6 Nc3 d5 g4 * [ECO "D80"] [Opening "Gruenfeld"] [Variation "Stockholm variation"] d4 Nf6 c4 g6 Nc3 d5 Bg5 * [ECO "D80"] [Opening "Gruenfeld"] [Variation "Lundin variation"] d4 Nf6 c4 g6 Nc3 d5 Bg5 Ne4 Nxe4 dxe4 Qd2 c5 * [ECO "D81"] [Opening "Gruenfeld"] [Variation "Russian variation"] d4 Nf6 c4 g6 Nc3 d5 Qb3 * [ECO "D82"] [Opening "Gruenfeld"] [Variation "4.Bf4"] d4 Nf6 c4 g6 Nc3 d5 Bf4 * [ECO "D83"] [Opening "Gruenfeld"] [Variation "Gruenfeld gambit"] d4 Nf6 c4 g6 Nc3 d5 Bf4 Bg7 e3 O-O * [ECO "D83"] [Opening "Gruenfeld"] [Variation "Gruenfeld gambit, Capablanca variation"] d4 Nf6 c4 g6 Nc3 d5 Bf4 Bg7 e3 O-O Rc1 * [ECO "D83"] [Opening "Gruenfeld"] [Variation "Gruenfeld gambit, Botvinnik variation"] d4 Nf6 c4 g6 Nc3 d5 Bf4 Bg7 e3 O-O Rc1 c5 dxc5 Be6 * [ECO "D84"] [Opening "Gruenfeld"] [Variation "Gruenfeld gambit accepted"] d4 Nf6 c4 g6 Nc3 d5 Bf4 Bg7 e3 O-O cxd5 Nxd5 Nxd5 Qxd5 Bxc7 * [ECO "D85"] [Opening "Gruenfeld"] [Variation "exchange variation"] d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 * [ECO "D85"] [Opening "Gruenfeld"] [Variation "modern exchange variation"] d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Nf3 * [ECO "D86"] [Opening "Gruenfeld"] [Variation "exchange, classical variation"] d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 * [ECO "D86"] [Opening "Gruenfeld"] [Variation "exchange, Larsen variation"] d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 O-O Ne2 Qd7 O-O b6 * [ECO "D86"] [Opening "Gruenfeld"] [Variation "exchange, Simagin's lesser variation"] d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 O-O Ne2 b6 * [ECO "D86"] [Opening "Gruenfeld"] [Variation "exchange, Simagin's improved variation"] d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 O-O Ne2 Nc6 * [ECO "D87"] [Opening "Gruenfeld"] [Variation "exchange, Spassky variation"] d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 O-O Ne2 c5 * [ECO "D87"] [Opening "Gruenfeld"] [Variation "exchange, Seville variation"] d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 O-O Ne2 c5 O-O Nc6 Be3 Bg4 f3 Na5 Bxf7+ * [ECO "D88"] [Opening "Gruenfeld"] [Variation "Spassky variation, main line, 10...cd, 11.cd"] d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 O-O Ne2 c5 O-O Nc6 Be3 cxd4 cxd4 * [ECO "D89"] [Opening "Gruenfeld"] [Variation "Spassky variation, main line, 13.Bd3"] d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 O-O Ne2 c5 O-O Nc6 Be3 cxd4 cxd4 Bg4 f3 Na5 Bd3 Be6 * [ECO "D89"] [Opening "Gruenfeld"] [Variation "exchange, Sokolsky variation"] d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 O-O Ne2 c5 O-O Nc6 Be3 cxd4 cxd4 Bg4 f3 Na5 Bd3 Be6 d5 * [ECO "D90"] [Opening "Gruenfeld"] [Variation "Three knights variation"] d4 Nf6 c4 g6 Nc3 d5 Nf3 * [ECO "D90"] [Opening "Gruenfeld"] [Variation "Schlechter variation"] d4 Nf6 c4 g6 Nc3 d5 Nf3 c6 * [ECO "D90"] [Opening "Gruenfeld"] [Variation "Three knights variation"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 * [ECO "D90"] [Opening "Gruenfeld"] [Variation "Flohr variation"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qa4+ * [ECO "D91"] [Opening "Gruenfeld"] [Variation "5.Bg5"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Bg5 * [ECO "D92"] [Opening "Gruenfeld"] [Variation "5.Bf4"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Bf4 * [ECO "D93"] [Opening "Gruenfeld with Bf4 e3"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Bf4 O-O e3 * [ECO "D94"] [Opening "Gruenfeld"] [Variation "5.e3"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 e3 * [ECO "D94"] [Opening "Gruenfeld"] [Variation "Makogonov variation"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 e3 O-O b4 * [ECO "D94"] [Opening "Gruenfeld"] [Variation "Opovcensky variation"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 e3 O-O Bd2 * [ECO "D94"] [Opening "Gruenfeld with e3 Bd3"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 e3 O-O Bd3 * [ECO "D94"] [Opening "Gruenfeld"] [Variation "Smyslov defence"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 e3 O-O Bd3 c6 O-O Bg4 * [ECO "D94"] [Opening "Gruenfeld"] [Variation "Flohr defence"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 e3 O-O Bd3 c6 O-O Bf5 * [ECO "D95"] [Opening "Gruenfeld with e3 & Qb3"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 e3 O-O Qb3 * [ECO "D95"] [Opening "Gruenfeld"] [Variation "Botvinnik variation"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 e3 O-O Qb3 e6 * [ECO "D95"] [Opening "Gruenfeld"] [Variation "Pachman variation"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 e3 O-O Qb3 dxc4 Bxc4 Nbd7 Ng5 * [ECO "D96"] [Opening "Gruenfeld"] [Variation "Russian variation"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 * [ECO "D97"] [Opening "Gruenfeld"] [Variation "Russian variation with e4"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 * [ECO "D97"] [Opening "Gruenfeld"] [Variation "Russian, Alekhine (Hungarian) variation"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 a6 * [ECO "D97"] [Opening "Gruenfeld"] [Variation "Russian, Szabo (Boleslavsky) variation"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 c6 * [ECO "D97"] [Opening "Gruenfeld"] [Variation "Russian, Levenfish variation"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 b6 * [ECO "D97"] [Opening "Gruenfeld"] [Variation "Russian, Byrne (Simagin) variation"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 Nc6 * [ECO "D97"] [Opening "Gruenfeld"] [Variation "Russian, Prins variation"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 Na6 * [ECO "D98"] [Opening "Gruenfeld"] [Variation "Russian, Smyslov variation"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 Bg4 * [ECO "D98"] [Opening "Gruenfeld"] [Variation "Russian, Keres variation"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 Bg4 Be3 Nfd7 Be2 Nb6 Qd3 Nc6 O-O-O * [ECO "D99"] [Opening "Gruenfeld defence"] [Variation "Smyslov, main line"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 Bg4 Be3 Nfd7 Qb3 * [ECO "D99"] [Opening "Gruenfeld defence"] [Variation "Smyslov, Yugoslav variation"] d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 Bg4 Be3 Nfd7 Qb3 c5 * [ECO "E00"] [Opening "Queen's pawn game"] d4 Nf6 c4 e6 * [ECO "E00"] [Opening "Neo-Indian (Seirawan) attack"] d4 Nf6 c4 e6 Bg5 * [ECO "E00"] [Opening "Catalan opening"] d4 Nf6 c4 e6 g3 * [ECO "E01"] [Opening "Catalan"] [Variation "closed"] d4 Nf6 c4 e6 g3 d5 Bg2 * [ECO "E02"] [Opening "Catalan"] [Variation "open, 5.Qa4"] d4 Nf6 c4 e6 g3 d5 Bg2 dxc4 Qa4+ * [ECO "E03"] [Opening "Catalan"] [Variation "open, Alekhine variation"] d4 Nf6 c4 e6 g3 d5 Bg2 dxc4 Qa4+ Nbd7 Qxc4 a6 Qc2 * [ECO "E03"] [Opening "Catalan"] [Variation "open, 5.Qa4 Nbd7, 6.Qxc4"] d4 Nf6 c4 e6 g3 d5 Bg2 dxc4 Qa4+ Nbd7 Qxc4 * [ECO "E04"] [Opening "Catalan"] [Variation "open, 5.Nf3"] d4 Nf6 c4 e6 g3 d5 Bg2 dxc4 Nf3 * [ECO "E05"] [Opening "Catalan"] [Variation "open, classical line"] d4 Nf6 c4 e6 g3 d5 Bg2 dxc4 Nf3 Be7 * [ECO "E06"] [Opening "Catalan"] [Variation "closed, 5.Nf3"] d4 Nf6 c4 e6 g3 d5 Bg2 Be7 Nf3 * [ECO "E07"] [Opening "Catalan"] [Variation "closed, 6...Nbd7"] d4 Nf6 c4 e6 g3 d5 Bg2 Be7 Nf3 O-O O-O Nbd7 * [ECO "E07"] [Opening "Catalan"] [Variation "closed, Botvinnik variation"] d4 Nf6 c4 e6 g3 d5 Bg2 Be7 Nf3 O-O O-O Nbd7 Nc3 c6 Qd3 * [ECO "E08"] [Opening "Catalan"] [Variation "closed, 7.Qc2"] d4 Nf6 c4 e6 g3 d5 Bg2 Be7 Nf3 O-O O-O Nbd7 Qc2 * [ECO "E08"] [Opening "Catalan"] [Variation "closed, Zagoryansky variation"] d4 Nf6 c4 e6 g3 d5 Bg2 Be7 Nf3 O-O O-O Nbd7 Qc2 c6 Rd1 b6 a4 * [ECO "E08"] [Opening "Catalan"] [Variation "closed, Qc2 & b3"] d4 Nf6 c4 e6 g3 d5 Bg2 Be7 Nf3 O-O O-O Nbd7 Qc2 c6 b3 * [ECO "E08"] [Opening "Catalan"] [Variation "closed, Spassky gambit"] d4 Nf6 c4 e6 g3 d5 Bg2 Be7 Nf3 O-O O-O Nbd7 Qc2 c6 b3 b6 Rd1 Bb7 Nc3 b5 * [ECO "E09"] [Opening "Catalan"] [Variation "closed, main line"] d4 Nf6 c4 e6 g3 d5 Bg2 Be7 Nf3 O-O O-O Nbd7 Qc2 c6 Nbd2 * [ECO "E09"] [Opening "Catalan"] [Variation "closed, Sokolsky variation"] d4 Nf6 c4 e6 g3 d5 Bg2 Be7 Nf3 O-O O-O Nbd7 Qc2 c6 Nbd2 b6 b3 a5 Bb2 Ba6 * [ECO "E10"] [Opening "Queen's pawn game"] d4 Nf6 c4 e6 Nf3 * [ECO "E10"] [Opening "Blumenfeld counter-gambit"] d4 Nf6 c4 e6 Nf3 c5 d5 b5 * [ECO "E10"] [Opening "Blumenfeld counter-gambit accepted"] d4 Nf6 c4 e6 Nf3 c5 d5 b5 dxe6 fxe6 cxb5 d5 * [ECO "E10"] [Opening "Blumenfeld counter-gambit, Dus-Chotimursky variation"] d4 Nf6 c4 e6 Nf3 c5 d5 b5 Bg5 * [ECO "E10"] [Opening "Blumenfeld counter-gambit, Spielmann variation"] d4 Nf6 c4 e6 Nf3 c5 d5 b5 Bg5 exd5 cxd5 h6 * [ECO "E10"] [Opening "Dzindzikhashvili defence"] d4 Nf6 c4 e6 Nf3 a6 * [ECO "E10"] [Opening "Doery defence"] d4 Nf6 c4 e6 Nf3 Ne4 * [ECO "E11"] [Opening "Bogo-Indian defence"] d4 Nf6 c4 e6 Nf3 Bb4+ * [ECO "E11"] [Opening "Bogo-Indian defence, Gruenfeld variation"] d4 Nf6 c4 e6 Nf3 Bb4+ Nbd2 * [ECO "E11"] [Opening "Bogo-Indian defence, Nimzovich variation"] d4 Nf6 c4 e6 Nf3 Bb4+ Bd2 Qe7 * [ECO "E11"] [Opening "Bogo-Indian defence, Monticelli trap"] d4 Nf6 c4 e6 Nf3 Bb4+ Bd2 Bxd2+ Qxd2 b6 g3 Bb7 Bg2 O-O Nc3 Ne4 Qc2 Nxc3 Ng5 * [ECO "E12"] [Opening "Queen's Indian defence"] d4 Nf6 c4 e6 Nf3 b6 * [ECO "E12"] [Opening "Queen's Indian"] [Variation "Miles variation"] d4 Nf6 c4 e6 Nf3 b6 Bf4 * [ECO "E12"] [Opening "Queen's Indian"] [Variation "Petrosian system"] d4 Nf6 c4 e6 Nf3 b6 a3 * [ECO "E12"] [Opening "Queen's Indian"] [Variation "4.Nc3"] d4 Nf6 c4 e6 Nf3 b6 Nc3 * [ECO "E12"] [Opening "Queen's Indian"] [Variation "4.Nc3, Botvinnik variation"] d4 Nf6 c4 e6 Nf3 b6 Nc3 Bb7 Bg5 h6 Bh4 g5 Bg3 Nh5 * [ECO "E13"] [Opening "Queen's Indian"] [Variation "4.Nc3, main line"] d4 Nf6 c4 e6 Nf3 b6 Nc3 Bb7 Bg5 h6 Bh4 Bb4 * [ECO "E14"] [Opening "Queen's Indian"] [Variation "4.e3"] d4 Nf6 c4 e6 Nf3 b6 e3 * [ECO "E14"] [Opening "Queen's Indian"] [Variation "Averbakh variation"] d4 Nf6 c4 e6 Nf3 b6 e3 Bb7 Bd3 c5 O-O Be7 b3 O-O Bb2 cxd4 Nxd4 * [ECO "E15"] [Opening "Queen's Indian"] [Variation "4.g3"] d4 Nf6 c4 e6 Nf3 b6 g3 * [ECO "E15"] [Opening "Queen's Indian"] [Variation "Nimzovich variation (exaggerated fianchetto)"] d4 Nf6 c4 e6 Nf3 b6 g3 Ba6 * [ECO "E15"] [Opening "Queen's Indian"] [Variation "4.g3 Bb7"] d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 * [ECO "E15"] [Opening "Queen's Indian"] [Variation "Rubinstein variation"] d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 c5 d5 exd5 Nh4 * [ECO "E15"] [Opening "Queen's Indian"] [Variation "Buerger variation"] d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 c5 d5 exd5 Ng5 * [ECO "E16"] [Opening "Queen's Indian"] [Variation "Capablanca variation"] d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Bb4+ * [ECO "E16"] [Opening "Queen's Indian"] [Variation "Yates variation"] d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Bb4+ Bd2 a5 * [ECO "E16"] [Opening "Queen's Indian"] [Variation "Riumin variation"] d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Bb4+ Bd2 Be7 * [ECO "E17"] [Opening "Queen's Indian"] [Variation "5.Bg2 Be7"] d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7 * [ECO "E17"] [Opening "Queen's Indian"] [Variation "anti-Queen's Indian system"] d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7 Nc3 * [ECO "E17"] [Opening "Queen's Indian"] [Variation "Opovcensky variation"] d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7 Nc3 Ne4 Bd2 * [ECO "E17"] [Opening "Queen's Indian"] [Variation "old main line, 6.O-O"] d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7 O-O * [ECO "E17"] [Opening "Queen's Indian"] [Variation "Euwe variation"] d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7 O-O O-O b3 * [ECO "E18"] [Opening "Queen's Indian"] [Variation "old main line, 7.Nc3"] d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7 O-O O-O Nc3 * [ECO "E19"] [Opening "Queen's Indian"] [Variation "old main line, 9.Qxc3"] d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7 O-O O-O Nc3 Ne4 Qc2 Nxc3 Qxc3 * [ECO "E20"] [Opening "Nimzo-Indian defence"] d4 Nf6 c4 e6 Nc3 Bb4 * [ECO "E20"] [Opening "Nimzo-Indian"] [Variation "Kmoch variation"] d4 Nf6 c4 e6 Nc3 Bb4 f3 * [ECO "E20"] [Opening "Nimzo-Indian"] [Variation "Mikenas attack"] d4 Nf6 c4 e6 Nc3 Bb4 Qd3 * [ECO "E20"] [Opening "Nimzo-Indian"] [Variation "Romanishin-Kasparov (Steiner) system"] d4 Nf6 c4 e6 Nc3 Bb4 g3 * [ECO "E21"] [Opening "Nimzo-Indian"] [Variation "three knights variation"] d4 Nf6 c4 e6 Nc3 Bb4 Nf3 * [ECO "E21"] [Opening "Nimzo-Indian"] [Variation "three knights, Korchnoi variation"] d4 Nf6 c4 e6 Nc3 Bb4 Nf3 c5 d5 * [ECO "E21"] [Opening "Nimzo-Indian"] [Variation "three knights, Euwe variation"] d4 Nf6 c4 e6 Nc3 Bb4 Nf3 c5 d5 Ne4 * [ECO "E22"] [Opening "Nimzo-Indian"] [Variation "Spielmann variation"] d4 Nf6 c4 e6 Nc3 Bb4 Qb3 * [ECO "E23"] [Opening "Nimzo-Indian"] [Variation "Spielmann, 4...c5, 5.dc Nc6"] d4 Nf6 c4 e6 Nc3 Bb4 Qb3 c5 dxc5 Nc6 * [ECO "E23"] [Opening "Nimzo-Indian"] [Variation "Spielmann, Karlsbad variation"] d4 Nf6 c4 e6 Nc3 Bb4 Qb3 c5 dxc5 Nc6 Nf3 Ne4 Bd2 Nxd2 * [ECO "E23"] [Opening "Nimzo-Indian"] [Variation "Spielmann, San Remo variation"] d4 Nf6 c4 e6 Nc3 Bb4 Qb3 c5 dxc5 Nc6 Nf3 Ne4 Bd2 Nxc5 * [ECO "E23"] [Opening "Nimzo-Indian"] [Variation "Spielmann, Staahlberg variation"] d4 Nf6 c4 e6 Nc3 Bb4 Qb3 c5 dxc5 Nc6 Nf3 Ne4 Bd2 Nxc5 Qc2 f5 g3 * [ECO "E24"] [Opening "Nimzo-Indian"] [Variation "Saemisch variation"] d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 * [ECO "E24"] [Opening "Nimzo-Indian"] [Variation "Saemisch, Botvinnik variation"] d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 c5 f3 d5 e3 O-O cxd5 Nxd5 * [ECO "E25"] [Opening "Nimzo-Indian"] [Variation "Saemisch variation"] d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 c5 f3 d5 cxd5 * [ECO "E25"] [Opening "Nimzo-Indian"] [Variation "Saemisch, Keres variation"] d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 c5 f3 d5 cxd5 Nxd5 dxc5 * [ECO "E25"] [Opening "Nimzo-Indian"] [Variation "Saemisch, Romanovsky variation"] d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 c5 f3 d5 cxd5 Nxd5 dxc5 f5 * [ECO "E26"] [Opening "Nimzo-Indian"] [Variation "Saemisch variation"] d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 c5 e3 * [ECO "E26"] [Opening "Nimzo-Indian"] [Variation "Saemisch, O'Kelly variation"] d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 c5 e3 b6 * [ECO "E27"] [Opening "Nimzo-Indian"] [Variation "Saemisch variation"] d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 O-O * [ECO "E28"] [Opening "Nimzo-Indian"] [Variation "Saemisch variation"] d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 O-O e3 * [ECO "E29"] [Opening "Nimzo-Indian"] [Variation "Saemisch, main line"] d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 O-O e3 c5 Bd3 Nc6 * [ECO "E29"] [Opening "Nimzo-Indian"] [Variation "Saemisch, Capablanca variation"] d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 O-O e3 c5 Bd3 Nc6 Ne2 b6 e4 Ne8 * [ECO "E30"] [Opening "Nimzo-Indian"] [Variation "Leningrad variation"] d4 Nf6 c4 e6 Nc3 Bb4 Bg5 * [ECO "E30"] [Opening "Nimzo-Indian"] [Variation "Leningrad, ...b5 gambit"] d4 Nf6 c4 e6 Nc3 Bb4 Bg5 h6 Bh4 c5 d5 b5 * [ECO "E31"] [Opening "Nimzo-Indian"] [Variation "Leningrad, main line"] d4 Nf6 c4 e6 Nc3 Bb4 Bg5 h6 Bh4 c5 d5 d6 * [ECO "E32"] [Opening "Nimzo-Indian"] [Variation "classical variation"] d4 Nf6 c4 e6 Nc3 Bb4 Qc2 * [ECO "E32"] [Opening "Nimzo-Indian"] [Variation "classical, Adorjan gambit"] d4 Nf6 c4 e6 Nc3 Bb4 Qc2 O-O a3 Bxc3+ Qxc3 b5 * [ECO "E33"] [Opening "Nimzo-Indian"] [Variation "classical, 4...Nc6"] d4 Nf6 c4 e6 Nc3 Bb4 Qc2 Nc6 * [ECO "E33"] [Opening "Nimzo-Indian"] [Variation "classical, Milner-Barry (Zurich) variation"] d4 Nf6 c4 e6 Nc3 Bb4 Qc2 Nc6 Nf3 d6 * [ECO "E34"] [Opening "Nimzo-Indian"] [Variation "classical, Noa variation"] d4 Nf6 c4 e6 Nc3 Bb4 Qc2 d5 * [ECO "E35"] [Opening "Nimzo-Indian"] [Variation "classical, Noa variation, 5.cd ed"] d4 Nf6 c4 e6 Nc3 Bb4 Qc2 d5 cxd5 exd5 * [ECO "E36"] [Opening "Nimzo-Indian"] [Variation "classical, Noa variation, 5.a3"] d4 Nf6 c4 e6 Nc3 Bb4 Qc2 d5 a3 * [ECO "E36"] [Opening "Nimzo-Indian"] [Variation "classical, Botvinnik variation"] d4 Nf6 c4 e6 Nc3 Bb4 Qc2 d5 a3 Bxc3+ Qxc3 Nc6 * [ECO "E36"] [Opening "Nimzo-Indian"] [Variation "classical, Noa variation, main line"] d4 Nf6 c4 e6 Nc3 Bb4 Qc2 d5 a3 Bxc3+ Qxc3 Ne4 * [ECO "E37"] [Opening "Nimzo-Indian"] [Variation "classical, Noa variation, main line, 7.Qc2"] d4 Nf6 c4 e6 Nc3 Bb4 Qc2 d5 a3 Bxc3+ Qxc3 Ne4 Qc2 * [ECO "E37"] [Opening "Nimzo-Indian"] [Variation "classical, San Remo variation"] d4 Nf6 c4 e6 Nc3 Bb4 Qc2 d5 a3 Bxc3+ Qxc3 Ne4 Qc2 Nc6 e3 e5 * [ECO "E38"] [Opening "Nimzo-Indian"] [Variation "classical, 4...c5"] d4 Nf6 c4 e6 Nc3 Bb4 Qc2 c5 * [ECO "E39"] [Opening "Nimzo-Indian"] [Variation "classical, Pirc variation"] d4 Nf6 c4 e6 Nc3 Bb4 Qc2 c5 dxc5 O-O * [ECO "E40"] [Opening "Nimzo-Indian"] [Variation "4.e3"] d4 Nf6 c4 e6 Nc3 Bb4 e3 * [ECO "E40"] [Opening "Nimzo-Indian"] [Variation "4.e3, Taimanov variation"] d4 Nf6 c4 e6 Nc3 Bb4 e3 Nc6 * [ECO "E41"] [Opening "Nimzo-Indian"] [Variation "4.e3 c5"] d4 Nf6 c4 e6 Nc3 Bb4 e3 c5 * [ECO "E41"] [Opening "Nimzo-Indian"] [Variation "e3, Huebner variation"] d4 Nf6 c4 e6 Nc3 Bb4 e3 c5 Bd3 Nc6 Nf3 Bxc3+ bxc3 d6 * [ECO "E42"] [Opening "Nimzo-Indian"] [Variation "4.e3 c5, 5.Ne2 (Rubinstein)"] d4 Nf6 c4 e6 Nc3 Bb4 e3 c5 Ne2 * [ECO "E43"] [Opening "Nimzo-Indian"] [Variation "Fischer variation"] d4 Nf6 c4 e6 Nc3 Bb4 e3 b6 * [ECO "E44"] [Opening "Nimzo-Indian"] [Variation "Fischer variation, 5.Ne2"] d4 Nf6 c4 e6 Nc3 Bb4 e3 b6 Ne2 * [ECO "E45"] [Opening "Nimzo-Indian"] [Variation "4.e3, Bronstein (Byrne) variation"] d4 Nf6 c4 e6 Nc3 Bb4 e3 b6 Ne2 Ba6 * [ECO "E46"] [Opening "Nimzo-Indian"] [Variation "4.e3 O-O"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O * [ECO "E46"] [Opening "Nimzo-Indian"] [Variation "Reshevsky variation"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Ne2 * [ECO "E46"] [Opening "Nimzo-Indian"] [Variation "Simagin variation"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Ne2 d5 a3 Bd6 * [ECO "E47"] [Opening "Nimzo-Indian"] [Variation "4.e3 O-O, 5.Bd3"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Bd3 * [ECO "E48"] [Opening "Nimzo-Indian"] [Variation "4.e3 O-O, 5.Bd3 d5"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Bd3 d5 * [ECO "E49"] [Opening "Nimzo-Indian"] [Variation "4.e3, Botvinnik system"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Bd3 d5 a3 Bxc3+ bxc3 * [ECO "E50"] [Opening "Nimzo-Indian"] [Variation "4.e3 e8g8, 5.Nf3, without ...d5"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 * [ECO "E51"] [Opening "Nimzo-Indian"] [Variation "4.e3 e8g8, 5.Nf3 d7d5"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 * [ECO "E51"] [Opening "Nimzo-Indian"] [Variation "4.e3, Ragozin variation"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 Nc6 O-O dxc4 * [ECO "E52"] [Opening "Nimzo-Indian"] [Variation "4.e3, main line with ...b6"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 b6 * [ECO "E53"] [Opening "Nimzo-Indian"] [Variation "4.e3, main line with ...c5"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 * [ECO "E53"] [Opening "Nimzo-Indian"] [Variation "4.e3, Keres variation"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 O-O b6 * [ECO "E53"] [Opening "Nimzo-Indian"] [Variation "4.e3, Gligoric system with 7...Nbd7"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 O-O Nbd7 * [ECO "E54"] [Opening "Nimzo-Indian"] [Variation "4.e3, Gligoric system with 7...dc"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 O-O dxc4 Bxc4 * [ECO "E54"] [Opening "Nimzo-Indian"] [Variation "4.e3, Gligoric system, Smyslov variation"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 O-O dxc4 Bxc4 Qe7 * [ECO "E55"] [Opening "Nimzo-Indian"] [Variation "4.e3, Gligoric system, Bronstein variation"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 O-O dxc4 Bxc4 Nbd7 * [ECO "E56"] [Opening "Nimzo-Indian"] [Variation "4.e3, main line with 7...Nc6"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 O-O Nc6 * [ECO "E57"] [Opening "Nimzo-Indian"] [Variation "4.e3, main line with 8...dc and 9...cd"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 O-O Nc6 a3 dxc4 Bxc4 cxd4 * [ECO "E58"] [Opening "Nimzo-Indian"] [Variation "4.e3, main line with 8...Bxc3"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 O-O Nc6 a3 Bxc3 bxc3 * [ECO "E59"] [Opening "Nimzo-Indian"] [Variation "4.e3, main line"] d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 O-O Nc6 a3 Bxc3 bxc3 dxc4 Bxc4 * [ECO "E60"] [Opening "King's Indian defence"] d4 Nf6 c4 g6 * [ECO "E60"] [Opening "King's Indian, 3.Nf3"] d4 Nf6 c4 g6 Nf3 * [ECO "E60"] [Opening "Queen's pawn"] [Variation "Mengarini attack"] d4 Nf6 c4 g6 Qc2 * [ECO "E60"] [Opening "King's Indian"] [Variation "Anti-Gruenfeld"] d4 Nf6 c4 g6 d5 * [ECO "E60"] [Opening "King's Indian"] [Variation "Danube gambit"] d4 Nf6 c4 g6 d5 b5 * [ECO "E60"] [Opening "King's Indian"] [Variation "3.g3"] d4 Nf6 c4 g6 g3 * [ECO "E60"] [Opening "King's Indian"] [Variation "3.g3, counterthrust variation"] d4 Nf6 c4 g6 g3 Bg7 Bg2 d5 * [ECO "E61"] [Opening "King's Indian defence, 3.Nc3"] d4 Nf6 c4 g6 Nc3 * [ECO "E61"] [Opening "King's Indian"] [Variation "Smyslov system"] d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 Bg5 * [ECO "E62"] [Opening "King's Indian"] [Variation "fianchetto variation"] d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 * [ECO "E62"] [Opening "King's Indian"] [Variation "fianchetto, Larsen system"] d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 c6 O-O Bf5 * [ECO "E62"] [Opening "King's Indian"] [Variation "fianchetto, Kavalek (Bronstein) variation"] d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 c6 O-O Qa5 * [ECO "E62"] [Opening "King's Indian"] [Variation "fianchetto with ...Nc6"] d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 Nc6 * [ECO "E62"] [Opening "King's Indian"] [Variation "fianchetto, Uhlmann (Szabo) variation"] d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 Nc6 O-O e5 * [ECO "E62"] [Opening "King's Indian"] [Variation "fianchetto, lesser Simagin (Spassky) variation"] d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 Nc6 O-O Bf5 * [ECO "E62"] [Opening "King's Indian"] [Variation "fianchetto, Simagin variation"] d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 Nc6 O-O Bg4 * [ECO "E63"] [Opening "King's Indian"] [Variation "fianchetto, Panno variation"] d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 Nc6 O-O a6 * [ECO "E64"] [Opening "King's Indian"] [Variation "fianchetto, Yugoslav system"] d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 c5 * [ECO "E65"] [Opening "King's Indian"] [Variation "fianchetto, Yugoslav, 7.O-O"] d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 c5 O-O * [ECO "E66"] [Opening "King's Indian"] [Variation "fianchetto, Yugoslav Panno"] d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 c5 O-O Nc6 d5 * [ECO "E67"] [Opening "King's Indian"] [Variation "fianchetto with ...Nd7"] d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 Nbd7 * [ECO "E67"] [Opening "King's Indian"] [Variation "fianchetto, classical variation"] d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 Nbd7 O-O e5 * [ECO "E68"] [Opening "King's Indian"] [Variation "fianchetto, classical variation, 8.e4"] d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 Nbd7 O-O e5 e4 * [ECO "E69"] [Opening "King's Indian"] [Variation "fianchetto, classical main line"] d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 Nbd7 O-O e5 e4 c6 h3 * [ECO "E70"] [Opening "King's Indian"] [Variation "4.e4"] d4 Nf6 c4 g6 Nc3 Bg7 e4 * [ECO "E70"] [Opening "King's Indian"] [Variation "Kramer system"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nge2 * [ECO "E70"] [Opening "King's Indian"] [Variation "accelerated Averbakh system"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Bg5 * [ECO "E71"] [Opening "King's Indian"] [Variation "Makagonov system (5.h3)"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 h3 * [ECO "E72"] [Opening "King's Indian with e4 & g3"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 g3 * [ECO "E72"] [Opening "King's Indian"] [Variation "Pomar system"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 g3 O-O Bg2 e5 Nge2 * [ECO "E73"] [Opening "King's Indian"] [Variation "5.Be2"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Be2 * [ECO "E73"] [Opening "King's Indian"] [Variation "Semi-Averbakh system"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Be2 O-O Be3 * [ECO "E73"] [Opening "King's Indian"] [Variation "Averbakh system"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Be2 O-O Bg5 * [ECO "E74"] [Opening "King's Indian"] [Variation "Averbakh, 6...c5"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Be2 O-O Bg5 c5 * [ECO "E75"] [Opening "King's Indian"] [Variation "Averbakh, main line"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Be2 O-O Bg5 c5 d5 e6 * [ECO "E76"] [Opening "King's Indian"] [Variation "Four pawns attack"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f4 * [ECO "E76"] [Opening "King's Indian"] [Variation "Four pawns attack, dynamic line"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f4 O-O Nf3 c5 d5 * [ECO "E77"] [Opening "King's Indian"] [Variation "Four pawns attack, 6.Be2"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f4 O-O Be2 * [ECO "E77"] [Opening "King's Indian"] [Variation "Six pawns attack"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f4 O-O Be2 c5 d5 e6 dxe6 fxe6 g4 Nc6 h4 * [ECO "E77"] [Opening "King's Indian"] [Variation "Four pawns attack"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f4 O-O Be2 c5 d5 e6 Nf3 * [ECO "E77"] [Opening "King's Indian"] [Variation "Four pawns attack, Florentine gambit"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f4 O-O Be2 c5 d5 e6 Nf3 exd5 e5 * [ECO "E78"] [Opening "King's Indian"] [Variation "Four pawns attack, with Be2 and Nf3"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f4 O-O Be2 c5 Nf3 * [ECO "E79"] [Opening "King's Indian"] [Variation "Four pawns attack, main line"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f4 O-O Be2 c5 Nf3 cxd4 Nxd4 Nc6 Be3 * [ECO "E80"] [Opening "King's Indian"] [Variation "Saemisch variation"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 * [ECO "E81"] [Opening "King's Indian"] [Variation "Saemisch, 5...O-O"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O * [ECO "E81"] [Opening "King's Indian"] [Variation "Saemisch, Byrne variation"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 c6 Bd3 a6 * [ECO "E82"] [Opening "King's Indian"] [Variation "Saemisch, double fianchetto variation"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 b6 * [ECO "E83"] [Opening "King's Indian"] [Variation "Saemisch, 6...Nc6"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 Nc6 * [ECO "E83"] [Opening "King's Indian"] [Variation "Saemisch, Ruban variation"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 Nc6 Nge2 Rb8 * [ECO "E83"] [Opening "King's Indian"] [Variation "Saemisch, Panno formation"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 Nc6 Nge2 a6 * [ECO "E84"] [Opening "King's Indian"] [Variation "Saemisch, Panno main line"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 Nc6 Nge2 a6 Qd2 Rb8 * [ECO "E85"] [Opening "King's Indian"] [Variation "Saemisch, orthodox variation"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 e5 * [ECO "E86"] [Opening "King's Indian"] [Variation "Saemisch, orthodox, 7.Nge2 c6"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 e5 Nge2 c6 * [ECO "E87"] [Opening "King's Indian"] [Variation "Saemisch, orthodox, 7.d5"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 e5 d5 * [ECO "E87"] [Opening "King's Indian"] [Variation "Saemisch, orthodox, Bronstein variation"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 e5 d5 Nh5 Qd2 Qh4+ g3 Nxg3 Qf2 Nxf1 Qxh4 Nxe3 Ke2 Nxc4 * [ECO "E88"] [Opening "King's Indian"] [Variation "Saemisch, orthodox, 7.d5 c6"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 e5 d5 c6 * [ECO "E89"] [Opening "King's Indian"] [Variation "Saemisch, orthodox main line"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 e5 d5 c6 Nge2 cxd5 * [ECO "E90"] [Opening "King's Indian"] [Variation "5.Nf3"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 * [ECO "E90"] [Opening "King's Indian"] [Variation "Larsen variation"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be3 * [ECO "E90"] [Opening "King's Indian"] [Variation "Zinnowitz variation"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Bg5 * [ECO "E91"] [Opening "King's Indian"] [Variation "6.Be2"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 * [ECO "E91"] [Opening "King's Indian"] [Variation "Kazakh variation"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 Na6 * [ECO "E92"] [Opening "King's Indian"] [Variation "classical variation"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 * [ECO "E92"] [Opening "King's Indian"] [Variation "Andersson variation"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 dxe5 * [ECO "E92"] [Opening "King's Indian"] [Variation "Gligoric-Taimanov system"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 Be3 * [ECO "E92"] [Opening "King's Indian"] [Variation "Petrosian system"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 d5 * [ECO "E92"] [Opening "King's Indian"] [Variation "Petrosian system, Stein variation"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 d5 a5 * [ECO "E93"] [Opening "King's Indian"] [Variation "Petrosian system, main line"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 d5 Nbd7 * [ECO "E93"] [Opening "King's Indian"] [Variation "Petrosian system, Keres variation"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 d5 Nbd7 Bg5 h6 Bh4 g5 Bg3 Nh5 h4 * [ECO "E94"] [Opening "King's Indian"] [Variation "orthodox variation"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O * [ECO "E94"] [Opening "King's Indian"] [Variation "orthodox, Donner variation"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O c6 * [ECO "E94"] [Opening "King's Indian"] [Variation "orthodox, 7...Nbd7"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nbd7 * [ECO "E95"] [Opening "King's Indian"] [Variation "orthodox, 7...Nbd7, 8.Re1"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nbd7 Re1 * [ECO "E96"] [Opening "King's Indian"] [Variation "orthodox, 7...Nbd7, main line"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nbd7 Re1 c6 Bf1 a5 * [ECO "E97"] [Opening "King's Indian"] [Variation "orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nc6 * [ECO "E97"] [Opening "King's Indian"] [Variation "orthodox, Aronin-Taimanov, bayonet attack"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nc6 d5 Ne7 b4 * [ECO "E98"] [Opening "King's Indian"] [Variation "orthodox, Aronin-Taimanov, 9.Ne1"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nc6 d5 Ne7 Ne1 * [ECO "E99"] [Opening "King's Indian"] [Variation "orthodox, Aronin-Taimanov, main line"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nc6 d5 Ne7 Ne1 Nd7 f3 f5 * [ECO "E99"] [Opening "King's Indian"] [Variation "orthodox, Aronin-Taimanov, Benko attack"] d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nc6 d5 Ne7 Ne1 Nd7 f3 f5 g4 *