DroidFish is an Android port of the very strong Stockfish chess engine, combined with a feature-rich GUI.Features:- Opening books: Internal, polyglot, CTG- 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- Scid DB support using "Scid on the go"- Highly configurable- Third party UCI engines- Gaviota endgame tablebases- Free, GPLv3Source code is available from my web page.The following permissions are used:Modify/delete SD card contents To save games to SD cardFull internet access To optionally communicate with network chess enginesPrevent phone from sleeping To optionally prevent screen blanking during game playControl vibrator To optionally vibrate after computer makes a move