PRIVATE CHESS REVIEW

Find the move that cost you the game.

Paste a PGN or import one completed public game. Stockfish works in your browser — no account, no live-game assistance.

BlackTime control unavailable

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♜8

♞

♝

♛

♚

♝

♞

♜

♟7

♟

♙2

♙

♖1a

♘b

♗c

♕d

♔e

♗f

♘g

♖h

WhiteTime control unavailable

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Start position

A fast, private chess mistake checker

ChessMistake helps you review completed chess games and spot the moments that changed the result. Import a public game from Chess.com or Lichess, or paste your PGN. Your game stays in your browser while Stockfish evaluates it.

1. ImportPaste a PGN or fetch a completed public game.

2. ReviewStockfish examines the positions locally.

3. ImproveSee the moves that lost the most advantage.