Diagnose
We analyze your games with Stockfish and surface recurring mistakes.
Private. Local. Yours.Understand your chess.
Understand your chess.
Improve faster.
We analyze your recent Chess.com games with Stockfish right in your browser—no uploads, no cloud. Clear insights. Personalized coaching.
Three simple steps to better chess
Review evidence
Explore annotated moments so you understand what went wrong and why.
Drill positions
Practice the positions that matter most and turn insight into improvement.
Your data stays private
All analysis runs locally in your browser using Stockfish.
100% localRuns in your browserNo uploadsGames never leaveNo accountsNo sign-up requiredOpen & transparentBuilt on open technology
What’s inside your report
Main weakness
Your biggest patterns, ranked by impact.
Annotated games
Key moments with engine explanations.
Recurring patterns
Themes and tactical motifs you miss.
Training positions
Curated drills from your own games.
Progress over time
Track improvement across reports.