Feature
Puzzles built from your own blunders
Generic puzzle trainers drill random positions. Audit Chess builds puzzles from your own games: every blunder you played and every winning tactic you missed becomes a solvable puzzle. Each solution is checked live, move by move, by Stockfish, so you are drilling your real recurring mistakes rather than someone else’s. Puzzles are tagged by where they happened - opening, middlegame or endgame - so you can see which phase leaks the most points. Paste your Lichess or Chess.com username and the puzzles come straight from your history. It is free, needs no account, and runs entirely in your browser.
From your mistakes, verified by Stockfish
When you blunder, Audit Chess captures the position and the better move you missed, then turns it into a puzzle. As you solve, the engine validates each move of the solution - if there is a stronger reply, it tells you - so you are never rewarded for a plausible-but-wrong idea.
Drill the phase that actually costs you
Every puzzle is bucketed by game phase. If most of your puzzles come from the endgame, that is where your points are going, and you can train exactly that instead of guessing.
Related features
Frequently asked questions
Can I make chess puzzles from my own games?+
Yes. Audit Chess turns every blunder and missed tactic from your Lichess and Chess.com games into a Stockfish-verified puzzle you can re-solve.
Are the puzzle solutions checked by an engine?+
Yes. Each solution is validated live, move by move, by Stockfish running in your browser.