open source chess engine
https://stockfishchess.org/
https://play.google.com/store/apps/details?id=org.petero.droidfish
https://itunes.apple.com/us/app/smallfish-chess-for-iphone/id675049147
origin - http://www.pipiscrew.com/?p=7379 stockfish
open source chess engine
https://stockfishchess.org/
https://play.google.com/store/apps/details?id=org.petero.droidfish
https://itunes.apple.com/us/app/smallfish-chess-for-iphone/id675049147
origin - http://www.pipiscrew.com/?p=7379 stockfish