Chess is a two-player strategy board game played on a chessboard, a checkered gameboard with 64 squares arranged in an 8×8 grid. Play does not involve hidden information. Each player begins with 16 pieces: one king, one queen, two rooks, two knights, two bishops, and eight pawns. Each of the six piece types moves differently, with the most powerful being the queen and the least powerful the pawn. The objective is to checkmate the opponent's king by placing it under an inescapable threat of capture. To this end, a player's pieces are used to attack and capture the opponent's pieces, while supporting each other. During the game, play typically involves making exchanges of one piece for an opponent's similar piece, but also finding and engineering opportunities to trade one piece for two, or to get a better position. In addition to checkmate, a player wins the game if the opponent resigns, or (in a timed game) runs out of time. There are also several ways that a game can end in a draw. Features: 1. Opening books 2. Unlimited undo/redo 3. Clocks 4. Analyze mode 5. Two player mode 6. Computer vs computer mode 7. Edit board 8. PGN import/export/edit 9. FEN/EPD import 10. Adjustable playing strength 11. One Touch Moves 12. Blindfold mode 13. Color themes 14. Animated moves 15. Scid DB support using "Scid on the go" 16. Highly configurable 17. Third party UCI engines 18. Configurable UCI engine options 19. Gaviota endgame tablebases 20. Syzygy endgame tablebases