DroidFish is an Android port of the very strong Stockfish chess engine, combined with a feature-rich graphical user interface. Features: Opening books: Internal, polyglot, CTG, ABK. Clocks. Analyze mode. Two player mode. Edit board. PGN import/export/edit. FEN/EPD import. Adjustable playing strength. One Touch Moves. Blindfold mode. Color themes. Animated moves.