Double chess is a chess variant invented by Julian S. Grant Hayward in 1916.[1][2] The game is played on a 16×12 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.
- ^ Pritchard (1994), pp. 91–92
- ^ Gligorić (2002), p. 73