ChessAnalyzerGame Review

From your last game to your next good move.

Free game reviews for Chess.com and Lichess. No account needed.

  1. 1

    Find your game

    Choose a site and enter your username, paste a game link, or import a PGN.

  2. 2

    Run the review

    Open a game and let Stockfish evaluate the moves. Longer games may take a little more time.

  3. 3

    Explore the moves

    Step through mistakes and missed chances. Click a suggested move to try it on the board.

What does a game review include?

Accuracy for each player, move ratings, an evaluation graph, and better moves to explore. The analysis board shows three suggested lines. Click any move in a line to see the position; your original game stays in the move list.

How do I read the evaluation?

A positive score favors White; a negative score favors Black. A score of +1 means roughly a pawn's advantage for White. A mate score shows a forced checkmate with best play.

How are accuracy and move ratings calculated?

Stockfish compares each move with the best continuation it finds. Accuracy summarizes how well your moves preserve your position. Ratings highlight strong moves, mistakes, and missed chances. Deeper analysis can change the scores, and an unfinished review covers only the moves analyzed.

Will my scores match Chess.com or Lichess?

Scores may differ because the engine settings and grading methods are different. ChessAnalyzer is an independent app and is not affiliated with Chess.com or Lichess.

Which games can I analyze?

Public standard-chess games from either site and games imported as PGN. Private games can be imported if you have the PGN. Chess variants such as Chess960 are not supported.

What happens to my data?

The chess engine runs on your device. Imported PGNs stay in your browser, and saved usernames and preferences are stored there too. Public games are fetched from Chess.com or Lichess. If you enable the coach's voice, its narration text is sent to the voice service to create audio. No signup is required.

Analyze a game

Open-source credits

Analysis is powered by Stockfish ( GPL-3.0 license, engine source). Opening names come from Lichess's opening database (CC0).