Triangular chess (game)

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.
Game rules.
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 promotion at the last . But the triangular geometry implies special move patterns for the pieces.
Tri-chess.
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.
References.
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