Jev Chess
Play chess against Jev and inspect the moves it considered.
What Jev decides
Which legal move to play and where the position sits on a seven-level evaluation scale.
Jev Chess pits Jev against people, Stockfish, or OpenRouter models and shows its move probabilities alongside saved games.
- Jev role
- Choose a legal chess move and evaluate the current position.
- Input
- The board state, move history, and code-generated descriptions of legal moves.
- Output
- A Choice over legal moves and a Score for the position.
- Decision frequency
- On each Jev move.
- Fallback
- Chess code enforces legal moves and game-ending rules.
How it works
Overview
Chess code enumerates legal moves and describes their tactical facts before asking Jev to choose a move and score the position in one request. The app displays likely moves as arrows, records completed games, and can run several model opponents at once. The repository reports game results and move-analysis experiments; these are author-reported, not independent benchmarks.
- Language
- JavaScript
- License
- MIT
- Author
- choxos
Sources
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