Blind Spot
Blind Spot
Personal Chess Report

The habit costing you
the most rating points

We analyze your last 30 games and identify the single mistake you repeat most — like a coach who watched every one.

Advanced settings
Fast
~15 sec
recommended
Balanced
~45 sec
Deep
~3 min
high accuracy

Unchecked: new games added to existing history.

Stockfish 18 engine analysis — used by top players worldwide
Analyzes 5 to 100 of your recent games — you set the count
AI-written explanations — your findings in plain English, not raw numbers
Public games only — no login, no Chess.com password
No account required
Free during beta
How it works
01
Enter your Chess.com username
02
Stockfish analyzes your last 30 games at engine depth (5–100, you choose)
03
We find the mistake pattern you repeat most often
04
You get a personalized coaching report with evidence
What you'll discover

Real patterns from real games — for example:

73% of your biggest mistakes happen with under 30 seconds on the clock.
Example insight
You convert only 58% of positions where you're clearly winning.
Example insight
Most of your blunders occur in the middlegame, not the opening.
Example insight
Early beta

Help shape this tool

We're actively collecting feedback from chess players at every level. What would make this more useful for you?