Three-Man Chess castling, a pawn's initial two-step option, "en passant", and promotion. The first player to checkmate an opponent wins the game. A player who is stalemated loses his turns to move, unless/until an opponent plays a move that releases the stalemate condition. While stalemated, his king is still subject to checkmate, and his other pieces are still subject to capture. Bibliography Three-Man Chess Three-Man Chess is a chess variant for three players invented by George R. Dekle, Sr. in 1984. The game is played on a hexagonal board comprising 96 quadrilateral cells. Each player controls a standard army of chess pieces.
Monochromatic chess Monochromatic chess Monochromatic chess is a chess variant with unknown origin. The initial board position and all rules are the same as in regular chess, except that pieces that begin on a black square must always stay on a black square and pieces that begin on a white square must always stay on a white square. This would mean that knights can never move, but "The Classified Encyclopedia of Chess Variants" says that knights make a double jump. It has been suggested that a knight be replaced with a (3,1)-leaper. If knights are allowed to move (or are captured, clearing