Free scan · no account · every number carries its sample

Your rating isn’t stuck.
It’s leaking.

One free scan of your Lichess or Chess.com games finds the biggest fixable leak in your play — what it costs in rating points, and the one thing to do about it this week.

Free · no account required · up to 1,000 recent games

Or read a legend first:
scan · knight_1487 · blitz · 412 gamessample
Rating
1487 ▼23/90d
Win rate
49% −2pp exp
Open leaks
3 ≈ +31 Elo

Signal · biggest fixable leak · n=41

The Caro-Kann as Black

+12
est. Elo

38% over 41 games — 13 points below what your rating predicts. Your most expensive repeatable hole.

#1The Caro-Kann as Blackn=41 · −13pp≈ +12
#2Losing on the clock34 flags · 8% of games≈ +11
#3Missed wins21 of 176 losses≈ +8

This week — one thing

Play 10 games as Black steering for the Caro-Kann. First 6–8 moves cold. Re-scan Sunday.

1,000
recent games read per scan
n ≥ 10
evidence gate on every claim
≈ +Elo
each leak priced in rating points

How it works

01
Scan
Enter any public Lichess or Chess.com username. Up to 1,000 recent games are fetched and normalised — no upload, no sign-up.
02
Get the verdict
Every leak — opening, colour, clock, conversion — is priced in estimated Elo and ranked by cost × fixability. You get one prescription for the week, not a dashboard.
03
Re-scan
Do the week's drill, play your games, scan again. The ledger re-ranks and the number moves. That loop is the product.

Inside the report

Signal & leak ledger
Your biggest fixable leak up top, the full ranked ledger under it — each entry with its sample size, severity, and estimated Elo if closed.
Healthy zones
Time trouble, flag losses, and draw rate benchmarked against a healthy zone and what's typical for your band and time control.
Repertoire map
Every opening you play enough to judge, plotted volume × performance against Elo expectation. Bottom-right is where study time pays.
Tilt & session
Win rate by game number within a session, and what happens after one loss versus two. Ends in a rule, not a chart.
Loss anatomy
Blunder, drift, clock, or missed win — how your losses actually happen, classified with computer evals where they exist.
Chess character
Four style axes measured against players at your level, resolving to one of nine archetypes. Shareable, and grounded in your own numbers.

Why the numbers can be trusted

No engine verdicts yet — everything is descriptive statistics measured against Elo expectation in your own games. Every percentage ships with its sample size. Patterns below the evidence gate are counted, not judged. The report says “the data says” — never “we think.”

Read the methodology ↗

Your move

Your biggest leak is six minutes away.

Free for any public account. No sign-up required.

Free · no account required · up to 1,000 recent games