is a highly sophisticated chess game featuring many beautifully rendered chess boards and pieces. Game play is very intuitive and takes full advantage of the multi-touch interface. Caissa Chess is driven by a powerful, professional-strength chess engine with self-improving algorithms and multiple difficulty levels. All chess rules are implemented and followed along with many features expected of a professional chess game,including opening database, hints, save and restore games, undo moves, play with other players via email,export to PGN, and many many more features. The application was designed with power efficiency in mind.