MoveAPiece: Offline Chess

Open it and play. MoveAPiece is an offline chess app that starts straight into a game against the Stockfish chess engine. No account, no ads, no internet connection, no settings screen. One "New Game" dialog covers every choice there is (opponent, colour, strength, opening), and the app remembers it for next time.

PLAY CHESS AGAINST THE COMPUTER
• Stockfish, the well-known open-source chess engine, at an adjustable playing strength from Elo 1320 to 3190, from beginner to master level
• Maia, a human-like chess AI: it plays the moves a player of a chosen rating (800 to 2400) would typically play, with natural thinking pauses. An opponent that feels like a club player, not a calculator
• Two players on one phone or tablet
• Chess960 (Fischer Random): every game starts from one of the 960 starting positions, picked at random, against Stockfish, Maia or a friend, on the screen or on an electronic board

LEARN CHESS OPENINGS
• Opening trainer with 20 well-known lines, among them Ruy Lopez, Sicilian Najdorf, Italian Game, Queen's Gambit, Caro-Kann and King's Indian. The app plays the book side and accepts only the correct reply
• Step-through opening library to review every line move by move
• Optional move hints while you learn

IMPROVE YOUR GAME
• Hint button, optional live evaluation, blunder warning after a bad move
• Post-game analysis that grades every move
• Undo, redo, flip the board, tap any move in the move list to jump there
• PGN import and export to study or share your games

ELECTRONIC CHESS BOARDS
Own a DGT Pegasus or a Chessnut Air, Air+, Pro or Go? Connect it over Bluetooth and play on the real board instead of the screen. Your moves are picked up from the pieces, the opponent's replies light up on the board's LEDs, and the app detects the board type on its own. The screen stays usable at the same time, for hints, evaluation and the move list.

OFFLINE AND PRIVATE
• Works completely offline, nothing leaves your device
• No account, no ads, no tracking, no in-app purchases
• Maia's neural network is bundled and runs on the device
• Free and open source (GPLv3)

Also there: move, capture and check sounds; portrait and landscape; phone and tablet layouts; English, German, French, Spanish, Italian and Dutch.

Recent changes:
* Fixes a crash of the Google Play version when a game starts.