2012-01-22 20:22:56 +01:00
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<body>
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<h2>About</h2>
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2012-01-23 23:50:57 +01:00
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<p>
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<i>DroidFish</i> is a feature-rich graphical chess user interface, combined with
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the very strong <i>Stockfish 2.2.2</i> chess engine.
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</p>
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2012-01-22 20:22:56 +01:00
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<h3>Features</h3>
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<ul>
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<li>Opening book</li>
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<li>Unlimited undo/redo</li>
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<li>Copy/paste to/from clipboard</li>
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<li>Analysis mode</li>
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<li>Two player mode</li>
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<li>Computer vs computer mode</li>
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<li>Setup positions</li>
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<li>Extensive PGN support</li>
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<li>Adjustable playing strength</li>
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<li>Third party UCI engines</li>
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<li>Gaviota endgame tablebases</li>
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</ul>
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<h3>Hints</h3>
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<ul>
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<li>
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In game mode, long press chess board to activate copy/paste menu.
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</li>
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<li>
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In edit board mode, long press chess board to activate edit menu.
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</li>
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<li>
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Scroll left/right on the chess board to undo/redo moves.
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</li>
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<li>
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If the game contains multiple variations, scroll up/down on the chess board
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to go to the previous/next variation.
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</li>
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<li>
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Long press left/right buttons for additional game navigation commands.
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</li>
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</ul>
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<h3>Opening books</h3>
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2012-01-23 23:50:57 +01:00
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<p>
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DroidFish contains a small internal opening book. If you want to use
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a larger book, you can configure DroidFish to use external <i>polyglot</i>
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or <i>CTG</i> book files:
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</p>
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2012-01-22 20:22:56 +01:00
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<ol>
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<li>
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Copy one or more polyglot book files to the <i>DroidFish</i> directory on
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the SD card. Polyglot books must have the file extension .bin. <b>Note!</b>
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The Android file system is case sensitive, so the extension must be .bin,
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not .Bin or .BIN.
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</li>
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<li>
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Copy one or more CTG book files to the <i>DroidFish</i> directory. A CTG
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book consists of three files with file extensions .ctg, .ctb and .cto. You
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must copy all three files.
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</li>
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<li>
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From the program menu, activate the <i>Select opening book</i> function.
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</li>
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<li>
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Select the opening book file you want to use.
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</li>
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</ol>
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<h3>PGN files</h3>
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2012-01-23 23:50:57 +01:00
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<p>
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DroidFish can load games from PGN files. To use this feature:
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</p>
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2012-01-22 20:22:56 +01:00
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<ol>
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<li>
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Copy one or more PGN files to the <i>DroidFish/pgn</i> directory on the SD
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card.
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</li>
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<li>
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Long press the chess board and select <i>Load game from PGN file</i>.
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</li>
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<li>
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Select the file, then the game within the file you want to load.
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</li>
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</ol>
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<p>
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To edit game headers such as player names, long press the move list and select
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<i>Edit Headers</i>. To edit comments for a move, long press the move list and
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select <i>Edit Comments</i>.
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</p>
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<p>
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To save your edited game, long press the chess board and select <i>Save game to
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PGN file</i>. Select the file to save to, then select the position in the file
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where the new game will be saved.
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</p>
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<p>
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To add computer analysis to the game tree, long press the analysis information
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when the computer is thinking and select <i>Add Analysis</i>. The current PV is
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added as a variation in the game tree.
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</p>
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<p>
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In analysis mode, it is possible to add null moves to the game tree. Be aware though
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that null moves are not included in the PGN standard and may not work in other PGN
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reading chess programs.
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</p>
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<h3>Scid files</h3>
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2012-01-23 23:50:57 +01:00
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<p>
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If you have <i>Scid on the go</i> installed, you can read Scid database files
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directly from DroidFish. Long press the chess board and select <i>Load game from
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Scid file</i>.
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</p>
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2012-01-22 20:22:56 +01:00
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<h3>UCI engines</h3>
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2012-01-23 23:50:57 +01:00
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<p>
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DroidFish can use third party UCI engines. To use this feature:
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</p>
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2012-01-22 20:22:56 +01:00
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<ol>
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<li>
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Copy one or more UCI engine binaries to the <i>DroidFish/uci</i> directory
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on the SD card. <b>Note!</b> The binaries must be compiled for Android.
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</li>
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<li>
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From the menu, choose <i>Select Chess Engine</i> and select the engine to
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use.
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</li>
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</ol>
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<h3>Gaviota endgame tablebases</h3>
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2012-01-23 23:50:57 +01:00
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<p>
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To use Gaviota endgame tablebases:
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</p>
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2012-01-22 20:22:56 +01:00
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<ol>
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<li>
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Copy .gtb.cp4 files to the <i>DroidFish/gtb</i> directory on the SD card.
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</li>
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<li>
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Use the <i>Endgame Tablebases</i> preferences screen to control how the
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tablebases are used.
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</li>
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</ol>
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<h3>License</h3>
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2012-01-23 23:50:57 +01:00
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<p>
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GNU GPL v3
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</p>
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2012-01-22 20:22:56 +01:00
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<h3>Developers</h3>
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<ul>
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<li>
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<i>Stockfish</i> is developed by Tord Romstad, Marco Costalba and Joona
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Kiiski.
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</li>
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<li>
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<i>Droidfish</i> is developed by Peter Österlund.
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</li>
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<li>
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User interface improvements by Aaro Korhonen.
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</li>
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</ul>
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<ul>
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<li>
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Gaviota Tablebases Probing Code API, Copyright © 2010 Miguel
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A. Ballicora.
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</li>
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<li>
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LZMA compression by Igor Pavlov.
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</li>
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<li>
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ZLIB compression, Copyright © 1995-2005 Jean-loup Gailly and Mark
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Adler.
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</li>
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<li>
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LZF compression, Copyright © 2000-2007 Marc Alexander Lehmann.
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</li>
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</ul>
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<h3>Translations</h3>
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<ul>
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<li>
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German translation by Uwe Walschus.
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</li>
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<li>
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Spanish translation by Amador Cuesta.
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</li>
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</ul>
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</body>
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</html>
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