Four-player chess for themselves. As with regular chess, four-player chess begins with fortifications and the of pieces, but opportunities for capturing pieces (and gaining points) come about at large as each of the three opponents likewise do attacks and make threats of capture. Therefore picking friends and enemies has a political quality; ultimately the impromptu teammates will have to combat each other as only one can win. The Cox-Forbes theory of the origin of chess, though debunked, asserts that a four-player version was the earliest form of the game. A description of a four-player chess game is found in an Indian text
Triangular Chess Triangular Chess Triangular Chess is a chess variant for two players invented by George R. Dekle, Sr. in 1986. The game is played on a hexagon-shaped gameboard comprising 96 triangular cells. Each player commands a full set of chess pieces in addition to three extra pawns and a "unicorn". Triangular Chess and its variation Tri-Chess were included in "World Game Review" No. 10 edited by Michael Keller. The starting setup is as shown. As in chess, White moves first and the object is checkmate. Other standard conventions apply as well, including castling, a pawn's initial two-step option, "en passant", and