Checkers was a two-player strategy board game from Earth. The game was played with twelve, usually round, pieces per player, placed on a checkerboard. The object of the game was for each player to move their pieces diagonally across the board by jumping, or capturing, the opponent's pieces. The first person to capture all of the opponent's pieces won.
Their board, with several pieces missing, was among the articles discovered by Captain Clark Terrell and Commander Pavel Chekov while investigating the cargo containers discovered in 2285 during their visit to the planet they believed to be Ceti Alpha VI. (Star Trek II: The Wrath of Khan)