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
Modern Chess (chess variant) Modern Chess (chess variant) Modern Chess is a chess variant played on a 9×9 board. The game was invented by Gabriel Vicente Maura in 1968. Besides the usual set of chess pieces, each player has an additional piece with a corresponding pawn: The first match was played in Madrid at Escuela de Bellas Artes de San Fernando's cafe on March 18, 1968. The players were Gabriel Vicente Maura himself (White), and Bonifacio Pedraz Cabezas (Black). The starting setup is as shown. All the standard rules of chess apply, along with the following special rules: In response to criticism that bishops