Chess game analysis
Analyse your chess games with Stockfish
Import your Chess.com or Lichess games and get an instant, engine-backed review that finds not just the blunders — but the recurring pattern behind them.
Free diagnosis · no signup · works with Chess.com & Lichess
More than a game review
A free game review that finds the pattern, not just the move
Any engine can label a move a blunder. PawnPilot reviews every game with Stockfish, then connects the dots across all of them to show the habit quietly leaking your rating.
Stockfish in your browser
The strongest open-source engine runs client-side — no uploads to wait on. Evaluations are cached so re-opening a game is instant.
Chess.com & Lichess import
Paste a username to pull your recent games automatically, or drop in raw PGN from any source. No manual exporting.
Blunder checker, upgraded
See every blunder, mistake and inaccuracy — then see which ones keep repeating, so you fix the cause instead of re-reading the same −2.4.
Move-by-move coaching
Each critical moment comes with a plain-language explanation of the habit behind it and the idea you missed.
Where your points leak
A clear breakdown of the phases and motifs costing you the most rating, so you know exactly what to work on next.
Free to start
The pattern diagnosis is free and needs no signup — paste a handle and see your leaks before you create an account.
How it works
From username to a plan in under a minute
- 01
Paste your username
Drop in your Chess.com or Lichess handle. No signup, no card — your recent games load instantly.
- 02
Get your instant diagnosis
Stockfish runs right in your browser and we cluster your mistakes into the patterns that actually cost you rating.
- 03
Your coach builds the plan
From there your coach remembers every session — drilling the habits behind your blunders and adapting week over week.
Game analysis, answered
How do I analyse my chess games for free?
Paste your Chess.com or Lichess username for a free diagnosis — PawnPilot runs Stockfish in your browser and highlights the blunders and patterns costing you rating.
Does it work with Chess.com and Lichess?
Yes. Import recent games directly from a Chess.com or Lichess handle, or upload raw PGN from any source.
What engine does the analysis use?
Stockfish, the strongest open-source chess engine, running client-side in your browser. Evaluations are cached so re-opening a game is instant.
Is this just a blunder checker?
No. It flags blunders like any engine, then goes further — clustering your mistakes into recurring patterns and coaching the habit behind them.
See what one game review reveals
Paste your Chess.com or Lichess username for a free Stockfish-backed diagnosis.