A board game apparatus for use in playing a game between two players includes a game board (10) having an alternating pattern of light (12) and dark (13) squares, a first set of game pieces (20) which is light in color, and a second set of game pieces (20) which is dark in color. First keying devices (14) are attached to the light squares of the game board and second keying devices (16) are attached to the dark squares. The first keying devices affect the appearance of the first set of game pieces but not the second set of game pieces, and said second keying devices affect the appearance of the second set of game pieces but not the first set of game pieces. A game piece (20) of one of the sets becomes a game piece of the other set when the piece is turned over.