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Multi-Level Boards
Choose 7 stacked levels for a tight tactical match, or 15 for a full grandmaster campaign. Pieces traverse the stack on every move.
Now in Open Beta · v1.4.2
Chess Evolved.
Chess Evolved.
Play in 4 Dimensions.
A multi-level 3D chess variant played on stacked rhombus-shaped boards. Standard pieces. Standard rules. An entirely new dimension of strategy.
What is 4D Rhombus Chess?
Three foundations of classic chess — pieces, captures, checkmate — stretched across stacked rhombus boards. Every move opens a new axis.
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Strategic Depth
Vertical threats redefine every opening. A knight one level up is a knight you didn't see coming. Plan in three axes at once.
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AI Opponent
Five difficulty tiers from Apprentice to Grandmaster. The engine sees the whole stack — and so will you, eventually.
One game. Two screens.
Choose your stack.
7
Levels
The original Rhombus format. Tighter board, faster matches, sharper tactics. Perfect for learning the vertical plane.
- Average match: 12–25 minutes
- Pawn promotion at column 7
- All standard chess pieces
- Recommended for new players
15
Levels
Maximum dimensional depth. Pieces span over twice the territory. Long-range plans, surprise diagonals, and deep traps.
- Average match: 45–90 minutes
- Extended pawn promotion logic
- Engine difficulty unlocked: GM tier
- Tournament-rated mode available
"It rewires how you see the board."
"My first checkmate came from a knight two levels above. I didn't know chess could still surprise me after 30 years."
— A. Volkov · FIDE 2280"15-level mode is a different game entirely. Bishops finally feel terrifying."
— Mira K. · Beta tester"Best chess variant since Crazyhouse. The vertical pawn rules click within 10 minutes."
— ChessTuber · 480k subs