Feature
Missed and blundered forced mates in your games
By Atulya GuptaMissing a forced checkmate is one of the most painful moments in chess — and it happens more often than most players realise. Audit Chess scans your full Lichess and Chess.com history for two specific patterns: positions where you had a forced mate and did not take it, and positions where your move handed the opponent a forced mate they did not previously have. Both are catalogued by the move you played, so you can spot whether you miss mates in time pressure, in specific phases, or with particular piece configurations. It is computed automatically as part of your analysis. Free, no account, runs in your browser.
Missed mates: you had it and let it go
Every position where a forced mate was available but your move did not keep one. Catalogued by the move you played so you can see the pattern in how you miss them.
Blundered mates: you created it for your opponent
Every move that handed the opponent a forced mate they did not previously have, in positions where you were not already losing. Separate from blunders that merely throw away material.
Related features
Frequently asked questions
How often do I miss checkmates?+
Audit Chess counts every position in your history where a forced mate was available and you did not play it, so you get an exact number rather than a vague sense.
How are missed mates detected?+
From the engine evaluation of each position in your games: when you had a forced mate available and your move no longer kept one, it is logged as a missed mate; when your move handed the opponent a forced mate, it is logged as a blundered mate. Short mates are the focus, because those are the ones you should find.