PolyMind Chess

By Cyril Dieumegard

Overview

Play chess against OpenAI Decisions or JEV by TypeSafe, compare their choices on the same position, and learn with Léon. Stockfish calculates candidate moves; your chosen decision engine selects a move. Explore variations, review move history, take back a turn and export PGN. Developer details show measured model preferences and request data. Preferences are not winning chances, difficulty is qualitative, and coaching uses calculated facts. English interface. Hosted games expire after 24 hours without a game-changing action. Website accounts and voice features are separate. PolyMind Chess is an independent product.

Tools

chess_coach

ChatGPT

Get calculated facts and English coaching for this position. Give explanations based only on these facts. Hint hides the suggested move from the UI; best reveals it. Never claim these explanations are the internal reasoning of a decision model.

chess_compare

ChatGPT

Ask OpenAI Decisions and JEV to select from the same Stockfish candidates for the same position and playing style. Returns measured preferences, timings, and request details; does not play a move. Probabilities are not winning chances, and confidence values are not cross-model accuracy measures.

chess_export_pgn

ChatGPT

Return the game as a standard PGN string for saving or studying. Does not publish the game.

chess_new_game

ChatGPT

Start a private PolyMind Chess game against OpenAI Decisions or JEV by TypeSafe. Returns the playable board. Difficulty levels are qualitative, not measured Elo ratings.

chess_play_move

ChatGPT

Append a legal player move in SAN or UCI notation and request the selected opponent’s reply. Use the current revision and a unique action_id; reuse that ID to safely retry the same request.