The free tier analyzes your last 10 games with Stockfish and tells you your number-one recurring mistake type. No account, no credit card. Most people know within a couple of minutes whether the diagnosis makes sense for their games.
Your top mistake type, named and explained. The free report identifies which recurring pattern is costing you the most across your last 10 games and tells you exactly what it looks like in your games.
You also get a brief explanation of why that pattern costs you points. Enough to confirm whether the diagnosis is accurate before deciding whether to go deeper.
10 games is enough to identify a dominant pattern in most players' chess. If you hang pieces regularly, it will show up. If your back rank is chronically weak, that shows up too. 10 games is not enough to be certain, and the free report says so clearly.
For a more reliable picture, the 100-game full report costs $10. More data means clearer signal. But the free version is a useful starting point.
Connect your Lichess account in one click via OAuth, or verify your Chess.com account with a quick challenge — paste a short code into your Chess.com Location field, then remove it once verified. You can also upload a PGN file directly if you prefer.
The whole thing takes about 60 seconds to set up. Analysis runs in the background and your report is saved so you can come back to it.
100 games instead of 10. All patterns ranked by severity, not just the top one. Three real game examples per pattern with move-by-move context. A short fix course targeting your specific weakness, built from positions in your own game history. And a PDF download if you want to keep a copy. All for $10. If the analysis is factually wrong, you get a refund.
"It shocked me at first to see what even your website showed, some of it I immediately realised as having been areas to improve on from my intuition of what's lacking but most of these are seriously incisive insights past what players like myself can recognise."
BlackboxChess user
"Pretty accurate. Definitely a good price point too."
Lichess player, ~1450 Elo
"Got my three weaknesses already — back rank blunders, unnecessary queen trades, losing my advantage."
Chess.com player, ~1200 Elo