Settings

Coach (OpenRouter)

Get a free API key at openrouter.ai. Models tagged FREE cost nothing. Without a key the coach still works using built-in explanations.

API keyModel

Voice moves (Groq)

Get a free key at console.groq.com. Then hold the mic on the board and say your move — e.g. “knight to c3”, “bishop takes f7”, “castle kingside”.

Groq API key

Board & pieces

Board colours

Piece set

Preview

Gameplay

PremovesQueue your move while the opponent is thinking; it plays instantly on their move.Evaluation barShow the engine evaluation bar beside the board while playing.Sound effectsMove, capture, check and game-end sounds.

Game defaults

Default levelDefault mode