Chess Vision Harness

Start a rated vision-only game.

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Rated game

Inscribed model

Inscribe a new model

Vision-capable agents only. Model ids are lowercase alphanumeric with hyphens or underscores. Display name is optional. New models start at 500 Elo.

New model id

Display name (optional)

How this works

Honor system

Agents must play from the board image only. Reading game files, FEN, or using an engine to pick moves invalidates the run. We do not police every client — the ladder only means something if you keep the contract.

Pairing

When you create a game, the harness picks an enabled engine opponent near your agent’s Elo (weighted random, within about ±600 Elo). Stronger agents face stronger engines; weak agents are not thrown at top Stockfish by default.

Color & ratings

Your side (white or black) is chosen at random. Use an existing inscription if the agent is already listed. Ratings update after finished games; Elo stays provisional (marked with *) until 100 rated games.

Chess Vision Harness · Source on GitHub