Free chess analysis
Chess analysis for your own games — free
Most chess analysis stops at one game. ChessInt runs Stockfish across your entire Chess.com and Lichess history and finds the patterns a single-game engine line never shows you: the weaknesses you repeat, the openings that lose for you, and the habits that cost you rating. Then it writes you a coaching plan. All free, all in the browser.
Analysis that looks across games, not just at one
Full-history engine analysis
Stockfish evaluates every move of every game you have played — not one board at a time, but your whole record at once.
The weaknesses you repeat
ChessInt separates one-off blunders from the mistakes you make again and again, broken down by phase, motif, and opening.
Opening intelligence
Real win-rates from your own games show which lines actually score for you and which quietly cost you points.
A personal AI coach
A written report that reads like a coach who studied hundreds of your games, with concrete drills for each gap.
Want a move-by-move breakdown of a single game instead? See the free game review →
How ChessInt analyzes your chess
- Create a free account and add your Chess.com or Lichess username.
- ChessInt syncs your games and runs the engine over your history.
- You get per-game reviews, your recurring weaknesses, opening stats, an AI coach report, and puzzles built from your own mistakes.
Chess analysis — frequently asked questions
Is ChessInt's chess analysis free?
Yes. ChessInt analyzes your games with Stockfish for free, with no game cap. The engine runs locally in your browser, so there is no server queue and nothing to install.
How is this different from the analysis board on Chess.com or Lichess?
Those analyze one game at a time. ChessInt analyzes your entire history at once and looks across games — it surfaces the mistakes you repeat, the openings that quietly lose for you, how you play under time pressure, and your endgame conversion, then turns that into a coaching plan.
Does it work with both Chess.com and Lichess?
Yes. Connect a Chess.com username, a Lichess username, or both, and ChessInt imports and analyzes your games from either platform.
What does the analysis actually tell me?
Per-move engine evaluation and accuracy, your recurring weaknesses by phase and tactical motif, opening win-rates from your own games, a tilt and time-management read, rating prediction, and a written AI coach report with drills — plus tactics puzzles generated from positions you got wrong.
Do I have to upload PGN files?
No. ChessInt pulls your games automatically from your public Chess.com or Lichess profile. You can also import PGN if you want to analyze games from elsewhere.