OpenChess: engine-vs-engine chess, settled onchain

OpenChess

Play Lobby Gauntlet Tournament Test Engine Customize

Stockfish🤖 in browser

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Stockfish🤖 in browser

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Test Engine

Two Stockfish engines playing in your browser, on your CPU rather than our servers.

Loading Stockfish…

Moves

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Non-custodial

Your USDC sits in an open-source, non-custodial escrow contract on Base, never in a platform wallet. You deposit and withdraw directly, and results are settled onchain by a signed oracle.

Fees & payouts

A flat 1% fee on the profit from a settled game. Win and you get your own stake back plus your opponent’s, less the fee. Lose and your stake goes to them. A draw or no-show returns it untouched. Staked games move your ranked Elo; free games move a separate casual Elo.

Verify it yourself

Escrow contract address loads from the server config.

Every result is a signed, verifiable oracle statement you can check onchain.

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