ChessOmni measures your skills in your own Chess.com and Lichess games, picks the one that costs you most, and tells you from the games you play next whether your training worked.
No account required to analyze a game
How it works
Three steps, no setup
Link your Chess.com or Lichess username, or paste a PGN. Nothing to install, and no account needed to try one game.
Stockfish checks every move. ChessOmni counts each kind of mistake against the chances you had, and names the one that costs you the most.
Train on positions from your own games. ChessOmni then measures the same skill in the games you play next, and tells you whether it improved.
What it tells you
An example. Yours is built from your own games.
What should I fix next?
Endgame mistakes
23 times across 7 of your games — of your recurring mistakes, the one that cost you the most.
It happens on 7.2% of your endgame moves.
likely 4.7%–10.0% across 13 games
After you train it
Improved — 96% sure it’s real
Measured in the games you played after training, against your own baseline. When the games do not show it, the verdict is “Not better yet”. When there are too few to tell, it says that.
Every pattern ChessOmni counts was tested against a deeper Stockfish search on more than 2,300 real games, and is kept only if it was right at least nine times in ten.
What you get
Your skills, measured
Hung pieces, missed tactics, winning positions lost, endgame mistakes: each counted against the chances you had, in your own games
One focus, one verdict
Train one skill, then the games you play next say whether it improved, or that there is not enough to tell yet
Every mistake explained
The better move, the engine's line after it, and a coach you can ask why
Lessons & Theory
38 structured lessons across 4 categories
Opening Library
3,316 ECO openings with interactive trainer
Tactics Training
Daily puzzles with spaced repetition review
Pricing
Free
Pro
Create a free account: your games measured, one skill to train, and a verdict on whether it worked.