Touch-move rule the player touches his rook at the same time as touching the king, he must castle with that rook if it is legal to do so. If the player completes a two-square king move without touching a rook, the player must move the correct rook accordingly if castling on that side is legal. Otherwise, the move must be withdrawn and another king move made. When a pawn is moved to its eighth , once the player takes his hand off the pawn, a different move of the pawn can no longer be substituted. However, the move is not complete until
Triangular Chess promotion at the last . But the triangular geometry implies special move patterns for the pieces. Tri-Chess is a variation of Triangular Chess created by Dekle in the same year. The game is for two players and is the same as Triangular Chess in all respects except the moves of the bishop, rook, queen, and king are increased. Bibliography 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