CONCENTRIC & ARCHIMEDEAN
♞CHESS
♛Experience chess on a revolutionary circular board. Two original variants designed for strategic depth and modern online play.
WHY PLAY?
Circular Board
72 cells in concentric rings create unique paths impossible on traditional square boards.
Special Pieces
Prince pieces, Berolina pawns, and unique royal movement rules.
Online Play
Challenge friends or join matchmaking with real-time gameplay.
Strategic Depth
New tactical possibilities with crescents, half-moons, and twin cells.
Move History
Review games with complete move replay and analysis tools.
Fast & Free
No downloads required. Play instantly in your browser.
CHOOSE YOUR VARIANT
Concentric Chess
Classic circular board with 72 cells in concentric rings. Features unique movement patterns with crescents and half-moons.
PLAY NOW ♔
Archimedes Spiral
Spiral board layout based on the Archimedes spiral. Even more complex strategic possibilities await.
PLAY NOW ♚GET STARTED
Three simple steps to your first game
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Choose Mode
Local, friend invite, or matchmaking
Play
Make moves and master the circle