flip piece is a strategy board game for two players, played on an 8×8 uncheckered board. There are 64 identical game pieces called disks (often spelled "discs"), which are light on one side and dark on the other. Players take turns placing discs on the board with their assigned color facing up. During a play, any discs of the opponent's color that are in a straight line and bounded by the disc just placed and another disc of the current player's color are turned over to the current player's color.