ChessGraderReview your gameFree · Unlimited · No ads
Get a full Chess.com-style game review with move grades, accuracy, brilliant moves, estimated rating, and plain-English explanations. Unlimited.
Why ChessGrader
ChessGrader is a free chess game analyzer for Chess.com, Lichess, and PGN games. It runs Stockfish 17.1 in your browser and turns the engine output into a complete game review: move grades, accuracy, brilliant moves, an evaluation graph, estimated game rating, and a clear explanation of each important mistake.
Chess.com Basic includes one full Game Review per day. ChessGrader has no daily limit because the engine runs on your device. Enter a public username and review every finished game without connecting your account. Compare the two reports.
Use the chess accuracy calculator, read what makes a move Brilliant, or paste a PGN for analysis. The grading method publishes the engine settings, boundaries, and verification rules.
Yes. There is no account, payment, ad, or daily review limit. Stockfish runs on your device, so each extra review does not create a server-analysis bill for ChessGrader.
You can review standard finished games from any public Chess.com archive by username. ChessGrader never asks for a Chess.com password and cannot change anything on the account.
No exact match is promised. Both tools use Stockfish, but Chess.com keeps parts of its classification and accuracy models private. ChessGrader publishes its own approximation and can disagree near a grade boundary.