2022-12-06: Version 1.88 - Update to Stockfish 15.1. 2022-04-23: Version 1.87 - Update to Stockfish 15. 2021-07-02: Version 1.86 - Update to Stockfish 14. 2021-02-20: Version 1.85 - Update to Stockfish 13. 2020-10-03: Version 1.84 - Update Stockfish to development version 280920. - Improve move probability calculation for CTG books. - Avoid NPE if opening a shared input stream fails. - Update translations. 2020-09-21: Version 1.83 - Fix crash if engine .ini file is corrupt. - Update translations. - Update Stockfish to development version 200920. - Add link to DroidFish manual from About/Help dialog. 2020-05-20: Version 1.82 - Support UCI_Elo for setting engine strength. - Support for ABK (Arena) opening books. - Implement maxNPS UCI option for CuckooChess. 2020-04-10: Version 1.81 - Fix color picker layout problems for some screen sizes. - Fix auto-scrolling of move list when figurine notation is enabled. - Add button action "Load game from PGN file". 2020-04-05: Version 1.80 - Improve editing of PGN comments. - Add RGB input support to the preferences color picker. - Add file browser support when setting UCI options. - Use file browser for file/directory preferences settings. - Make preferences color picker handle device rotation changes correctly. - Fix crash when reading from a broken SCID database. - Update translations. 2020-02-23: Version 1.79 - Separate settings for "move sound" and "move speech". - Support for move input using drag and drop. - Function to copy analysis information as text to the clipboard. - Autosave old game when new game is started. - New file menu action "load deleted game" to retrieve previously autosaved games. - Update translations. 2020-01-18: Version 1.78 - Update to Stockfish 11. - Add button action "Force computer move". - Don't try to fixup invalid e.p. square if the position is invalid. - Update translations. - Use less CPU while waiting for human player to move. 2019-09-29: Version 1.77 - Add a user manual. - Include link to source code in about/help dialog text. - Handle pasting of multiple PGN games into DroidFish. - Improve behavior when searching/filtering PGN games. - Show action bar in load/save game activities to make the "delete file" action accessible again. Bug introduced in version 1.75. - Support regular expressions when searching/filtering PGN games. - Better handling of IO errors when reading/writing PGN files. - Remove vibration when opening board context menu. - Don't vibrate when human player makes a move. - Prevent crash if engine produces an invalid PV. - Prevent crash when trying to render chess pieces with size 0. - Prevent crash when trying to read an intent from another app. 2019-07-21: Version 1.76 - Use check boxes instead of switches in settings, to work better on Android 4. 2019-07-20: Version 1.75 - Remove incorrect "engine error" message at end of games. - Various small user interface improvements. - Fix null pointer exception in ColorPickerPreference. - Create EngineServer Java program that can be used as a server for the DroidFish "network engine" function. - Send the full game history to chess engines. This is used by LC0 and similar engines. - Set the working directory for external engines to ".../DroidFish/uci/logs". This is useful for the OpenCL version of LC0, which needs to create a tuning file. - Move the "New Game" menu action from the right to the left drawer menu. - Update the app icon to look better for Android 9. - Make the CPU usage notification work for Android 8 and later. - Fix language setting for Android 9. 2019-04-17: Version 1.74 - Fix incorrect rendering of chess pieces on some devices. - Add more chess piece sets, mostly from PyChess. - Add button action to toggle tablebase hints. - Fix a rare crash in the Stockfish engine. 2018-12-12: Version 1.73 - Update to Stockfish 10. - Allow changing the user interface language. - New Simplified Chinese translation. - Support 7-men syzygy tablebases. - Add option to load next/previous game by sweeping on the chess board. 2018-02-06: Version 1.72 - Update to Stockfish 9. - Show selective search depth in the status area when the engine is thinking. 2017-09-30: Version 1.71 - Updated Stockfish engine to git version from 2017-09-06. - Changed default transposition table size from 16MB to 64MB. - Made it easier to disable the opening book. - Fixed crash when trying to speak a null move. - New Korean translation, from Hyobeom Ahn. - New Turkish translation, from Emrullah Ertürk. 2017-07-06: Version 1.70 - New Ukrainian and Belarusian translations, from Mix Gerder and Toru Hasegawa. 2017-06-11: Version 1.69 - Fixed crash in Android 7 when handling large PGN games. 2017-06-03: Version 1.68 - Don't do network communication on the main thread. - Fixed crash when receiving an incorrect PGN intent. - Fixed stack overflow in request permission handling. - Fixed possible crash when reading scid database. - Fixed thread safety problem in MoveGen class. - Fixed possible crash when canceling a progress dialog. - Fixed possible crash when starting the edit board activity. - Added support for multi windows in Android 7. 2017-01-31: Version 1.67 - Fixed crash in text to speech code. - Improved opening names. - German translation updates. 2017-01-03: Version 1.66 - Workaround for bug in Samsung text to speech implementation. - Spanish text to speech support. 2016-12-30: Version 1.65 - Truncate long PV lines by default. - Remember previous scroll location in preferences. - English and German text to speech support for move announcements. - Fixed bug that could cause a mating move to be added more than once to the game tree. - Made it possible to set the game result when editing headers. - Fixed out of memory error when receiving large PGN files. 2016-12-23: Version 1.64 - Added configurable button action to toggle arrow visibility. - Changed maximum number of arrows to 8. - Show opening names (ECO classification). - Made it possible to use the ECO database as an opening book. - Made it possible to add ECO classification to game headers. - Made it possible to disable automatic move list scrolling. - Made UCI_LimitStrength and UCI_Elo options visible. - Made sharing games with ChessBase app work. - Made it possible to share an image of the chess board. - Fixed PGN file parsing problem. - In edit board mode, use the same board orientation as in game play. - Made it easier to change number of variations (MultiPV). - Fixed intent handling in low memory situations, which could cause the app to lock up. - Better handling of large amount of data from the chess engine, to make large MultiPV values work reliably. 2016-11-01: Version 1.63 - Updated Stockfish engine to version 8. - Show engine hashfull information. - Updated translations. 2016-08-29: Version 1.62 - Fixed wrong drawer menu background color in the edit board activity. - Handle 50-move draw rule when "probe at root" is enabled in settings. - Fixed problem in Stockfish engine that could cause TBs not to be used if some 6-men TBs are available, the root position contains 6 men, but the root position is not in the TBs. - Fixed possible crash in TourGuide cleanup. - Fixed engine communication problem for Android N. - Updated Stockfish engine to git version from 2016-08-28. 2016-01-13: Version 1.61 - Permission handling for Android 6. - Let the human player claim a draw that involves specifying but not playing a move that would lead to a 50move/3rep draw. - Display usage hints the first time the program is started. 2016-01-03: Version 1.60 - Explicitly set the drawer menu foreground text color. The default color is hard to read on some devices. - Update Stockfish to version 7. - Made it possible to edit UCI options while the engine is thinking. - Moved buttons slightly away from the screen edges to avoid interference between opening a drawer and long pressing a button. - Don't reset MultiPV setting when restarting the app. - Added "secret" way to allocate an unsafely large hash table. - Speeded up updating of the move list. - Improved handling of movelist scrolling when navigation bar is enabled/disabled and when the analysis view gets smaller/larger. - Use different background color for move list and thinking output. - If a game ends with one player resigning after making his move, allow adding a variation to the game tree with the same move but without resigning. - Translation updates. 2015-12-27: Version 1.59 - Include higher resolution versions of the app icon. - More efficient way to detect if scid on the go is installed. - Fixed Stockfish startup problem for Android 4.0 and earlier. 2015-12-26: Version 1.58 - Handle "number of search threads" as a normal UCI option, to make it possible to set arbitrary values and to remember different values for different engines. - Added a configurable button action to set engine options. - Handle non-breaking space in pgn import. - Fixed very rare syzygy probing bug. - Improved handling of invalid en passant square in FEN parser. - More efficient update of "thinking info" when the engine provides data faster than the GUI can handle. - Updated Stockfish to version 231015. - Run the engine process with lower scheduling priority. - Reordered buttons according to Android guidelines. - Include engine name in the UCI options activity title. - Require at least Android 3.0. - Removed obsolete "go to move" menu item. - Updated the application icon. - Use proguard to shrink apk size, but don't obfuscate to make debugging easier. - Use a drawer layout instead of the options menu, to fix problems on some new devices without a menu button. 2015-02-15: Version 1.57 - Updated Stockfish to version 6. - Auto forward mode when replaying games. - Translation updates. 2015-01-10: Version 1.56 - Support for Android 5 and 64-bit CPUs. - Preserve case of UCI option names in the setoption command. Some engines think UCI options are case sensitive. 2014-10-12: Version 1.55 - Added support for syzygy tablebases. - Show tablebase hits in the analysis info. - Allow using different tablebase paths for local and network engines. - Improved touch sensitivity. - Made it possible to open the options menu by clicking on the title bar or by long pressing the M button. - Changed location of external opening book files to /sdcard/DroidFish/book. - Made it possible to modify engine UCI parameters. - Fixed crash when rotating the display while reading a FEN file. - Support for "open exchange" engines, such as texel and komodo 8. - Made the move variation up/down functions work also when the current position is not a branch point in the game tree. - Fixed arrow display problem after switching from multi-PV to single-PV mode. - Don't allow adding a null move to the game tree when the side to move is in check. - Made it possible to specify a full file path to the book file in preferences. - Fixed potential integer overflow problem in CTG book code. - Implemented DTZ/WDL tablebase hints in the GUI when only syzygy tablebases are available. - Updated Stockfish to the latest development version and included syzygy tablebase probing code. - Updated translations. 2014-05-31: Version 1.54 - Updated Stockfish engine to version 5. - Added options for larger hash tables. Useful for network engines. - Recognize UCI option "Cores" to set number of search threads. - Changed default preferences to favor analysis mode. - Don't read the whole engine file just to determine if it is a network engine or not. - Removed support for Android 1.5. 2013-11-30: Version 1.53 DD - Updated Stockfish engine to version DD. - Handle intents with file names ending with .pgn, .epd and .fen. - Fixed time management bug triggered by ponder mode. - Allow using 16 threads. Useful for network engines. 2013-08-20: Version 1.52 - Updated Stockfish engine to version 4. 2013-07-31: Version 1.51 - Avoid crash if playing a move sound fails. - Give a small positive weight for CTG book moves even if the book entry says wins=draws=0 for the move. - Improved detection of number of CPU cores to work on HTC One. - Ignore UTF8 byte order mark when reading PGN files. - Handle Intent.EXTRA_STREAM of type "file". - Fixed bug in Stockfish that could make the engine hang. 2013-05-08: Version 1.50 - Updated Stockfish engine to version 3. 2013-04-07: Version 1.49 - New Polish translation, from Rafał Smyka. - Made it possible to open .fen and .epd files in DroidFish from a file manager. 2013-03-14: Version 1.48 - Added function to receive chess positions from other programs. - New button action to load game/position from the last used file. - New button action to change chess engine. 2013-01-27: Version 1.47 - Updated translations. - Updates for NDK r8d. - Added game numbers to the load/save game list. - Better MIME type support. - Improved move sound. - Fixed problem with long press in move list on Android 4.1. - Added option to not highlight the last played move. - Implemented blindfold mode. - New Italian translation, from Michele Carfora. - New Dutch translation, from David Pront. - Fixed strength setting bug when using Stockfish engine. 2012-12-25: Version 1.46 - Updated translations. 2012-10-05: Version 1.45 - Updated translations. - Configurable hash table size. - Support for network chess engines. - Option to use localized names for chess pieces. - Option to use figurine notation for chess pieces. - Improved "One Touch Move" behavior. - Don't show engine strength in title bar in analysis mode. - New color picker to configure individual colors. - Preference setting to choose between "sticky" and "toggle" mode for selecting squares. - Don't start the white clock in the initial position. - Updated Stockfish engine to version 2.3.1. - Option to display captured pieces. - Menu button now works in edit board mode. - Support for edit board full-screen mode. - Better edit board landscape layout. - Avoid crash if "Scid on the go" misbehaves. - Made it possible to change background color and text foreground color. - Reorganized preferences. - Made display of variations in the status area optional. - Added option to not keep variations in the move list. - When loading a game, switch game mode to edit/replay. 2012-07-20: Version 1.44 - Portuguese translation by C. R. Zamana. - Fixed crash if engine reported invalid moves in the PV or an invalid ponder move. - When stopping analysis mode by pressing the toggle analysis button, restore the game mode from the last time the toggle analysis button was pressed. - Display player names in the title bar when the clocks are not running. - Implemented function to share a PGN game. - Handle PGN file intents with more than one game. - Disable use of boldface in Android 4.1 to work around crash bug, see http://code.google.com/p/android/issues/detail?id=34872. 2012-06-16: Version 1.43 - Fixed crash when "Force GPU rendering" is enabled in Android preferences. 2012-06-13: Version 1.42 - Made chess board slightly larger. - Updated translations, new Russian translation. - Updated for new SDK/NDK versions. - Optionally vibrate when the computer makes a move. - Do GTB initialization in the background to improve responsiveness when many tablebases are installed. - Configurable buttons. - Variation arrows no longer override analysis arrows and book arrows. - Fixed bug related to "Flip Board: Player" setting. - Support for MIPS CPUs. - Updated Stockfish to a development version to fix problems on quad-core ARM CPUs. - Support for SVG graphics, based on svg-android project. - Use SVG graphics for button images. - Avoid force close if engine sends invalid moves in the PV. - Display book move hints in bold face to distinguish them from book move percentages. - Improved tapping logic in games and edit board mode. 2012-04-14: Version 1.41 - Ignore leading and trailing whitespace in the TB path. - Handle PGN intents with scheme "file". - Avoid infinite recursion in SeekBarPreference. - Added color themes from "Scid on the go". - Display PGN comments in a color different from PGN moves. - Added preference setting for left-handed landscape mode. - Added support for default player name. - Added flip board button. - Changed default number of engine threads to 1. Improves GUI responsiveness on some devices. - Allow selecting side to play when starting a new game - If setting strength to 0% when Stockfish engine is used, show a hint that using the CuckooChess engine gives even lower strength. - Made it possible to load/save PGN files in any directory, using the "OI file manager". - Made "save to pgn file" easier to understand. 2012-01-28: Version 1.40 - Rewrote the CuckooChess communication so that internet permission is no longer needed. - Avoid null pointer exception if engine reports that it is currently searching an invalid move. - Added support for Gaviota endgame tablebases. - Fixed problem with CPU notification not going away if program was previously killed by Android to free up memory. - Made the internal Stockfish engine work also on arm v6 architectures. - Use html to format the about dialog text. - Avoid null pointer exception in pgn load/save. - In "sticky" edit board mode, if the target square already contains the selected piece, clear the square instead of doing nothing. 2012-01-15: Version 1.39 - Fixed crash when reading broken PGN files. - Made it possible to hide engine statistics. - Don't let the "thinking" view take up screen space when it is empty. - In edit board mode, made setup piece selection "sticky" to make board editing faster. - Better error messages when trying to read invalid FEN/PGN data. - Rewrote the engine communication so that the GUI never waits for the engine. Improves responsiveness and avoids "NetworkOnMainThread" errors. - Changed default thinking time to 60 moves in 2 minutes. - Implemented support for external UCI engines. - Added Spanish translation, from Amador Cuesta. - Fix SeekBarPreference for languages that uses decimal comma instead of decimal dot. - Automatically create default directory structure on the SD card when starting the program. - Fixed bug when exporting time information to PGN data. - Updated built-in Stockfish engine to version 2.2.2. - Made strength setting in CuckooChess engine between 0% and 10% even weaker. 0% now plays random legal moves, and 10% corresponds to the old 0% setting. 2011-12-18: Version 1.38 - User interface improvements by Aaro Korhonen. - When making a move, scroll the move list to make the current move visible. - German translation. - Fixed crash in some Android versions when long pressing the analysis text area when the engine was not analyzing. - Made it possible to click on moves in the move list to navigate to the corresponding position in the game. Idea from Scid on the go. - Don't allow setting up positions with too many pieces. 2011-11-20: Version 1.37 - Bug fix for handling of corrupt CTG books. - New preference setting for controlling number of CPU cores used. - Use Scid file selection dialog when opening scid files. - Updated to NDK r7, with added support for x86 devices. - Fixed PGN header editing bug. - Updated Stockfish engine to version 2.1.1. (minor) 2011-07-26: Version 1.36 - Support for "pondering" mode. - Setting for larger game navigation buttons. - Setting for larger text size. 2011-07-22: Version 1.35 - Finer control over book randomization. - Implemented Multi-PV analysis mode. - Fixed possible race condition when shutting down engine. - Behave better when memory runs out while reading very large PGN files. - Made it possible to cancel reading of a PGN file. - Made it possible to insert null moves in analysis mode. 2011-07-17: Version 1.34 - Added support for CTG opening books. - Updated to NDK r6. 2011-06-26: Version 1.33 - Fixed force close in previous version. 2011-06-26: Version 1.32 - Implemented function to prevent screen blanking. - More robust detection of multi-cpu systems. - Handle MIME type x-chess-pgn. - Made it possible to set strength by clicking the strength number field and enter a number using the keyboard. 2011-05-08: Version 1.31 - Bigger margins around the strength seekbar to make it easier to set 0%/100% strength. 2011-05-08: Version 1.30 - Updated Stockfish to version 2.1. - Adjustable playing strength also for Stockfish engine. 2011-04-23: Version 1.29 - Adjustable playing strength using the CuckooChess engine. 2011-03-27: Version 1.28 - Ported to NDK r5b. 2011-01-07: Version 1.27 - Support for large screens. 2011-01-02: Version 1.26 - Updated Stockfish to version 2.0. - Made Stockfish use all available CPU cores. 2010-11-28: Version 1.25 - Added support for opening Scid databases when the "Scid on the go" app is installed. Thanks to Gerhard Kalab for this feature. - The on-screen M/back/forward buttons didn't work in Android 1.5. - Added a file menu (load/save game) to the options menu. - Fixed crash if a color was set to the empty string in preferences. 2010-11-20: Version 1.24 - Added option to draw square labels (a-h, 1-8). - Added buttons to undo/redo moves and a button to change game mode. - Fixed draw offer bug. - New commands to move variations up/down in the game tree. - Show gui/engine version information in the about/help dialog. - Added commands to go to start/end of variation, next/previous variation, and start of game. Connected to long press on left/right buttons. - Added commands to load next/previous game from a PGN file. 2010-11-07: Version 1.23 - Fixed crash when trying to undo first move while playing black. 2010-11-06: Version 1.22 - Implemented animated piece movement. - Fixed resign bug. - Changed default color theme to blue. - Reduced engine CPU priority to improve GUI responsiveness. - Added "positive scores are good for white" analysis option. 2010-10-24: Version 1.21 - Enabled fast scroll in the pgn selection listview. - Remember current position in a PGN file after program restart. - Implemented PGN header editing. - Added "truncate game tree" function. - Implemented PGN comment editing. - Made it possible to select where in a file to save a PGN game. - New function to delete a PGN file. - New function to store computer analysis in the game tree. 2010-10-17: Version 1.20 - Fixed occasional null pointer exception when exiting program. - Don't modify clocks in analysis mode. - Fixed bogus arrows when starting program in a mate position. - Updated Stockfish to version 1.9.1. - Use less memory when reading PGN files. - After loading PGN game, ask user what to do with the game. Replay, analyze, play white or play black. - New function to save games to PGN files. - New function to delete games from a PGN file. 2010-09-27: Version 1.19 - Implemented fullscreen mode. 2010-09-26: Version 1.18 - Redisplay the options menu after selecting undo/redo. - Implemented PGN game search function. 2010-08-15: Version 1.17 - Added more color themes. - Added option to invert scroll direction. 2010-08-15: Version 1.16 - Removed space after [ in PGN export. - Handle more move formats in PGN import. - Better handling of broken PGN headers. - Display current move number in the status line. - Use = character in promotion moves in PGN export. - PGN file parsing speedup. - Move numbers were sometimes missing in the displayed move list. - Implemented support for "One Touch Moves". - Implemented support for color themes. - Clocks were sometimes wrong after restarting the program. 2010-08-08: Version 1.15 - Implemented PGN view options. - Implemented loading of PGN games from SD card. 2010-08-04: Version 1.14 - Better layout for devices with height/width ratio not matching the HTC Desire (800/480). - Made user interface for draw claim/offer/accept a bit more clear. - Added option to use arrows to display moves on the chess board. - Grouped preferences settings. - Implemented feature to undo/redo moves by doing scroll gestures on the chess board. - Support for handling variations in PGN files. - Added options to control which PGN features to import/export. - Added resign command. - Implemented feature to go to next/previous variation using vertical scrolling on the chess board. - Implemented "remove variation" command in the "long press" menu. 2010-07-25: Version 1.13 - The program icon was not shown on Android 1.5. - Changed "Auto Swap Sides" behavior to make two player games work better. 2010-07-24: Version 1.12 - Warn user when CPU is used in the background. - Added chess clocks. - Support for time controls. - Added "force computer move" command. 2010-07-22: Version 1.11 - Nicer interface when selecting book files. - Added option to display opening book hints for the human player. 2010-07-21: Version 1.10 - Fixed memory leak. - Added icons to the options menu. - Support for polyglot opening books. - Removed book mirror code. - Handle opening book cycles. 2010-07-20: Version 1.09 - Optimization to make program more responsive in long games. - Show "redo" moves in move list and in PGN export. - Implemented "goto move". 2010-07-19: Version 1.08 - Fixed crash after "edit board". - Optimized engine <-> GUI communication. - Fixed race condition when starting analysis. - Improved "edit board". Now possible to set all FEN properties. - Handle mirrored positions in the opening book code. - Correctly handle draw by repetition after "pseudo-legal but not legal" en passant square. - Allow human to claim draw. - Made engine accept draw offer if far enough behind. 2010-07-18: Version 1.07 - Handle screen orientation changes. - Added option to play sound when computer makes a move. - Implemented "edit board". - Added "Auto Swap Sides" function. 2010-07-15: Version 1.06 - Made it possible to undo/redo moves while computer is thinking. - Fixed race condition when starting computer thinking. 2010-07-15: Version 1.05 - Added "about" menu. - Improved responsiveness in analysis mode. 2010-07-14: Version 1.04 - Better looking graphics. 2010-07-13: Version 1.03 - Implemented analysis mode, two player mode and computer vs computer mode. - Added a 3min thinking time level, to make it possible to play at tournament time controls. 2010-07-12: Version 1.02 - Support for all Android versions. - Support for install on SD card in Android 2.2. 2010-07-11: Version 1.01 - Added opening book - Added JUnit tests - Bug fix: Correctly handle FEN strings ending with a \n character - Refuse to run on anything but Android 2.1, because other versions make the program crash. 2010-07-09: Version 1.00 - Initial version