Chess Analytics & Replay

Stockfish 18

Chess.com API & Real-time Engine Insights

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Why review your games with this tool?

Chess Analytics & Replay is a free, browser-based tool that turns public Chess.com data into clear insights. Type a username, and in seconds you get ratings, win rates, opening tendencies, and a move-by-move engine review of any recent game. Everything runs locally in your browser — no account, no tracking, no cost.

Live Chess.com Data

Pull any public Chess.com profile and recent games — ratings, records, and results across rapid, blitz, bullet, and daily.

Win-Rate Analytics

Visual charts of performance by time control, color, result, and opening so you can spot strengths and weaknesses.

Stockfish Engine Review

Every move is scored by Stockfish 18 and classified as brilliant, best, good, inaccuracy, mistake, or blunder.

Opening Explorer

See which openings you win and lose the most, and filter your games to any opening, opponent, or rating range.

How it works

1. Search any player

Type any Chess.com username and the tool pulls their public profile, ratings, and recent games instantly.

2. Review the stats

See ratings across time controls, win rates by color and opening, and a filterable list of every recent game.

3. Replay and analyze

Step through any game move by move while Stockfish 18 scores each position and points out the best move.

Stockfish is one of the strongest open-source chess engines in the world. Here it runs entirely in your browser, so there is no wait for a server and no limit on how many games you analyze. Curious about what the numbers mean? Start with the chess guides for plain-language explanations of ratings, engine evaluations, and move classifications.

This is an independent project powered by the public Chess.com API and the Stockfish engine. It is not affiliated with, endorsed by, or sponsored by Chess.com or the Stockfish project. See our About, Privacy, Terms and FAQ pages.