Sixty-four squares.
A universe of possibilities.
Welcome aboard
Every orbit starts
with a move.
A friend across the world.
A worthy computer opponent. Your choice.
The waiting room
Welcome, .
Choose a player to invite them. When they accept, you both enter the same world.
Invite a friend to this page and meet them here. Invitations last 30 seconds.
A little solo exploration
Meet your next opponent.
Across the solar system
White to move
Preparing your solar system…
Drag with your mouse to turn and tilt the board. Click a piece to select it. On touch screens, use Orbit camera to rotate.
Select one of your pieces. Its legal destinations will light up.
Old game. New orbit.
Think a move ahead.
Enjoy the journey.
Solar ivory against lunar blue. Pieces rise into an arc when they move; captured pieces scatter into stardust. At checkmate, the fallen king makes one final bow.
How to play & what to expect
Enter a short name to join the waiting room. Invite an available player and wait for acceptance, or choose one of three computer difficulties. In a human match, sides are assigned randomly.
Tap a piece, then one of its highlighted destinations. Select Simple board for a flat, keyboard-accessible view: arrow keys navigate squares; Enter or Space selects; Escape clears selection. Promotion offers queen, rook, bishop or knight.
Castling, en passant, check, checkmate and stalemate are supported. Claim a draw on your turn when the current position has repeated three times or 50 moves per side have passed without a pawn move or capture. Fivefold repetition, 75 moves per side, and basic insufficient-material positions end automatically. You can also offer a draw; the computer accepts.
Drag anywhere on the 3D board with your mouse to turn and tilt it; a click still selects a piece. On touch screens, Orbit camera enables dragging; switch it off to move pieces or scroll. The simple board shows letters and numbers around its edges, following your side of the board. Space motion and move effects can be switched off independently. Reduced motion starts both off. If WebGL is unavailable, the simple board still works.
Guest names and games live temporarily on this server. Keep this tab open; refreshing can reconnect in the same tab. After two minutes without contact, the session expires and an unfinished game ends without a winner. Server restarts end guest sessions. There are no accounts, rankings, chat, saved games or game telemetry. An internet connection is needed for computer play too.
This is an artistic solar-system setting with imagined planetary surfaces and compressed scale.