SAC YOUR ROOK.
CRUSH THE ANALYTICS.
Analyze openings, rating swings, streaks, and tactical patterns from any Chess.com profile — instantly, entirely client-side.
Tilt Monitor
Track streaks, collapses, peak elo, and the exact moment your tilt spiral began.
Opening DNA
Discover which openings make you look brilliant and which ones quietly sabotage your rating.
Deep Scan
Massive PGN archives parsed locally at alarming speed without melting your browser.
Annual Damage Report
Your entire chess year summarized into one beautifully incriminating report.
// LEADERBOARD
ABOUT THE SYSTEM
SacThatRook analyzes public chess games to uncover opening habits, tactical tendencies, streak behavior, tilt patterns, and repertoire identity.
No accounts.
No cloud profiling.
No engine spam.
// Just raw chess telemetry.
NO ENGINE REQUIRED
Most insights are derived directly from PGNs, structures, openings, and statistical patterns.
CLIENT-SIDE PROCESSING
Analysis runs locally in your browser using incremental PGN parsing and worker threads.
TACTICAL DOSSIERS
Every profile becomes a playable identity: openings, collapses, chaos index, and comfort zones.
NO SIGNUPS
Enter a username. Run the scan. Disappear into the blitz queue again.