Quad Chess

Fourth Dimensional Chess

What is Quad Chess?

Quad Chess is chess with four boards in play at once. A regular 8x8 chess board sits in the center, surrounded by three triangle worlds:

• Rook's World (5x5): two full rows of rooks for each side.
• Pawn World (5x5): two full rows of pawns for each side.
• Bishop World (7x7): two rows of alternating bishops and knights for each side.

Fight your way to the Morph Tunnel squares on your opponent's back row of a triangle world, and your piece slides down the tunnel onto the center board's landing row. Tunnels are one-way, so every trip counts.

It's a two-player game on one iPhone: pass the phone back and forth. Player 1 plays Ivory and Player 2 plays Crimson. Checkmate the king, or capture it, on the center board to win.

• Spin the three worlds around the center board with your finger.
• Built-in How to Play and "How the Pieces Move" guides for new players.
• For all ages. No ads, no accounts, no in-app purchases, and it works offline.

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Quick rules

• The reply rule: after your opponent moves on a triangle board, you get 2 moves on the center board, then you must answer on a triangle board.
• Morph Tunnels: reaching a tunnel square on the opponent's back row of a triangle world sends your piece down to the center board (row 3 for Player 1, row 6 for Player 2).
• Winning: checkmate, or capture the king, on the center board.

Coming later: the physical set