Three-man chess gameboard and starting position[a]
Three-man chess gameboard and starting position[a]

Three-man chess is a chess variant for three players invented by George R. Dekle Sr. in 1984.[1][2] The game is played on a hexagonal board comprising 96 quadrilateral cells. Each player controls a standard army of chess pieces.

Three-man chess was included in World Game Review No. 10 edited by Michael Keller.[3]

Game rules

The illustration shows the starting setup; each player's queen is placed to the left of his king. White moves first and play proceeds clockwise around the board. Pieces move the same as they do in chess, with some special features described below. Standard conventions apply including castling, a pawn's initial two-step option, en passant, and promotion. The first player to checkmate an opponent wins the game.

Special move features

The bishop moves along diagonals in the diagram colored dark gray and changes square colors if crossing the center. White's king pawn can advance to the cell with green dot, or capture Black's knight, pawn, or bishop. (The bishop cannot take the pawn, however, since it is not on a diagonal path for doing so.) White's pawn in Red territory is an "arrow pawn" able to move to green dots (one of which promotes) or capture on red dots. It cannot capture Red's pawn, which is also blocking it from moving to that cell. (Should the red pawn move forward, White can take it. For example, if the red pawn moves forward with a double-step, White can take it diagonally backwards e.p.)
The rook moves along the rank and file in the diagram colored light gray. The knight can move to any cell with a green dot.


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.

See also


  1. ^ This board geometry (three chessboard halves fused together) and initial setup are frequently seen in three-player chess variants, for example, Three-Player Chess (Zubrin, 1971), Drier-Schach (Schmidt Spiele, 1970s), Yalta (Spindler, 1975), and ThreeChess (ThreeChess Team, 2010). The games vary by their rulesets.
  2. ^ On a regular chessboard, a knight has four different leap patterns, all resulting in identical move possibilities. But the results on the three-man board are not equivalent, and only a (2,1) leap is permitted.
  3. ^ It transforms to the "arrow pawn" fairy piece.


  1. ^ Pritchard (1994), p. 314
  2. ^ Pritchard (2007), p. 195
  3. ^ Keller, Michael, ed. (June 1991). "A Panorama of Chess Variants". World Game Review. No. 10. Michael Keller. ISSN 1041-0546.