American checkers on the dark squares. Dark moves first. Mandatory jumps; longest jump wins when several captures are possible.
Pick your side.
Click a piece, then a highlighted square. Drag works too. Captures are forced when available. N new game.
Difficulty is locked while a game is in progress. Use New game or finish the round, then open settings before you play.
Higher difficulty means the AI picks its best move more often (lower random chance).