White Knight Mk 12

White Knight Mk 12 is a 1- or 2-player chess program played versus the computer for the BBC Micro; it is the sequel to White Knight Mk 11.

Chess pieces are displayed on the screen, and commands are submitted via the keyboard. The player can toggle black/white and clear squares. The player can move forwards or backwards one move, set clocks, invert the board, and play invisible chess. There are four modes of game play, and the computer can be set to play itself.