Double Chess Double Chess Double Chess is a chess variant invented by Julian S. Grant Hayward in 1916. The game is played on a 12×16 chessboard with each player in control of two complete armies placed side-by-side. The rules were published in the January 1929 issue of "British Chess Magazine". The illustration shows the starting setup. A player wins by checkmating either enemy king. Additional rules: As in standard chess, pawns promote upon reaching the furthest . J. R. Capablanca, who had experimented with different forms of chess in the 1920s, found the game "remarkably interesting", and a four-game match was held
Tutti-Frutti Chess Tutti-Frutti Chess Tutti-Frutti Chess is a chess variant invented by Ralph Betza and Philip Cohen in 1978. It has been played regularly in tournaments and correspondence games. The game is played using a standard chessboard, and follows all the rules and conventions of standard chess, with one difference: the queen's rooks are replaced by empresses (rook plus knight), the queens are replaced by amazons, the king's bishops are replaced by queens and the king's knights are replaced by princesses. All other pieces are unchanged. A king may castle with a rook or empress, and pawns may promote to any piece