rookbook

Analyze my games · Reading · Glossary

Everything Rookbook tracks

Rookbook reads your Chess.com history and builds a profile you can't get anywhere else. Every feature below runs in your browser — no account, no engine server, no data leaves your machine.

Blown Leads

Games where you held a winning material advantage and lost anyway. Every game is tracked with your peak lead, how much you gave back, and engine evaluation of where it went wrong. This is the gap between being ahead and staying ahead — and it shows you exactly what it costs.

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Missed Checkmates

Every position where a forced mate in one was on the board and you played something else. The scan covers your entire history, not just games you ran through Game Review. It separates the misses that cost you the game from the ones that only delayed the win, so you know which ones actually matter.

Try it → · Read more · Why it happens

Banned Opponent Lookup

Check which of your past opponents were later closed for fair play violations. See your record against them, how many rating points you lost in those games, and whether Chess.com refunded them. No other tool surfaces this from your own game history.

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Insights & Coach Analysis

Tilt detection, session fatigue, color imbalance, clock trouble, castling habits, opening repertoire win rates, material conversion, and more. A prose coach writeup reads your data and tells you what it means in plain language — not a dashboard of numbers, but an actual assessment.

Try it → · Tilt analysis deep dive

Opening Repertoire

Your most-played openings with win, draw, and loss rates, grouped by ECO code or move depth. See which openings are costing you rating and which are carrying you — broken out by color and time control so you can spot the difference between a bad opening and one you only lose in blitz.

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Endgame Breakdown

Win rates by endgame type — rook vs rook, queen vs queen, minor pieces, and everything else. The losses are listed so you can click straight into the games that got away and see where the technique broke down.

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Rating Trends & Charts

Elo over time, win rate by time of day, accuracy by game length, streaks, and weekly summaries. The charts update as games load, so you can watch your history fill in and spot the periods where something changed.

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Game Log

Full searchable game history with flags for thrown games, blown leads, and comebacks. Filter by time control, result, ending type, rated or unrated. Star games to build a study list you can return to, and sort by any column to find the patterns hiding in your results.

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Common questions

What stats does Rookbook track? Blown leads, missed checkmates, banned opponents, tilt and fatigue patterns, opening repertoire win rates, endgame breakdowns, rating trends, clock usage, castling habits, material conversion, and more. It scans your full Chess.com game history and builds a profile you cannot get from Chess.com alone.

Is Rookbook free? Yes. Every feature is free with no account required. The analysis runs entirely in your browser using Chess.com's public game data. Nothing is uploaded anywhere.

Does Rookbook work without a Chess.com account? You need a Chess.com username to look up, but you do not need to log in or create a Rookbook account. Enter any public username and the analysis starts immediately.