Fix My ChessFree
Your diagnosis, on the house
€0
- Your dominant leak, named
- A master to review your games
- One lesson, anchored to a real game
No account needed
Identity, not a report card
You don't have a hundred weaknesses. You have one — and it repeats.
We read your real games, name the leak that drains your rating, and a legendary master trains it shut with you. Free, no account needed.
- Tal
- Garry K.
- Anderssen
- Alekhine
- Capablanca
- Bobby F.
- Rubinstein
- Magn
- Morphy
- Petrosian
- Karp
- Lasker
- Nimzowitsch
- Steinitz
The uncomfortable truth
Your rating plateau is not a mystery. It is one leak — and it can be closed.
The loose piece, the missed dagger, the won ending that slips away: the same mistake, game after game, hiding in plain sight. We read the games you actually played, name that leak, estimate your ELO and tell you which strengths to keep. Then the real work begins: a legendary master trains it shut with you, teaching from his own games.
Nothing invented
Every claim points to a move you actually played — game, date and opponent you can check. No AI making things up about your chess.
Same games, same verdict
A chess engine analyses everything right here in your browser. Run it twice and the diagnosis is identical — check us.
Real genius, never faked
Masters speak through their real games and human-written lessons — never a chatbot in their name.
See it before you try it
This is what your verdict looks like.
A moment, cited
And the master speaks
Nimzowitsch · The Prophylactic Mind
“First restrain, then blockade, and only then destroy. Patience is a weapon.”
Your verdict names the leak, prices it in ELO points, and seats you with the master whose style is its antidote — his voice on every move you review.
Meet yours — freeThe journey
Train under your master. Watch the leak shrink. Graduate.
- 01
Diagnosis
Paste a username. We read your real games and name the one leak costing you the most — with the moves to prove it.
- 02
Discipleship
Choose your mentor — any historical master reviews your games in their own voice. Train on positions drawn from your own blunders.
- 03
Graduation
Watch the leak shrink, game over game. When it closes, your next master is waiting — a new lineage, a new fight.
Pricing
Start free. Pay only when you want the cure, not just the verdict.
Pro
The discipleship
€6 / mo
- Choose your master from all 14 — or train with several
- A plan every day that attacks your leaks and sharpens your strengths
- Train on your own games and watch progress shrink, leak by leak
- Private leagues in the Arena, plus deeper game analysis
Before you ask
The short version.
Is this just another engine that lists my blunders?
No. Stockfish finds the moments — that part is plumbing. The product is the master who cures the pattern behind them, and the discipline of training under one style until the leak closes.
Do you use AI to analyse my games?
Never. Diagnosis is a deterministic chess engine plus curated, human-written content. Same games in, same diagnosis out — no model inventing wisdom about your chess.
Are these real masters?
The games are real and public. Long-deceased masters appear under their own names; living greats are evoked under a recognisable alias, never impersonated. No master ever speaks as a chatbot.
Do I need an account?
Not for your first diagnosis. Paste a Lichess or Chess.com username and meet your master in under a minute.
Which sites do you support?
Lichess and Chess.com — the games you already play.
Stop studying at random.
Find the one mistake — and the master who'll fix it.
Diagnose my games — free