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    Check my game: find the move that mattered

    Paste a game or pick one of your last games. Stockfish checks every move on your own device.

    Copy it from the share or download button on Lichess or Chess.com.

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    Check my game FAQs

    Frequently Asked Questions

    No. The chess engine runs in your browser, so your game stays on your device. If you pick a game by username, the username goes only to Lichess or Chess.com, to read your public games.

    With the formula Lichess publishes, using Stockfish in your browser. It is not the Chess.com number, and it can differ from Lichess because the engine here is a lighter build.

    Yes. Move a piece on the board to start your own line, and the engine shows its three best replies. One tap takes you back to the game.

    A long list of mistakes is hard to use. Besides marking every mistake in the move list, we pick the one move that cost the most for each side and give the reason in words.

    Yes. A long game can take a minute or more on a phone, and you can stop at any time.