A Chess.com user built a free analysis tool that pulls your entire public game history and reveals patterns the standard platform stats miss. The tool answers questions Chess.com's own analytics don't address: which openings actually work for you against your typical opponents, whether fatigue tanks your results late in bullet sessions, how losing streaks affect your play.
The process is simple. You enter your username and the tool downloads every public game through Chess.com's official API, then generates a comprehensive report. Instead of just watching your rating graph climb and fall, you get granular data that explains why your results fluctuate.
This scratches a real itch. Chess.com's stats are solid, but they're broad strokes. A player might have a 52 percent win rate in the Sicilian Defense overall, yet that number masks disaster against 2000+ players and dominance against lower-rated opposition. This tool isolates those splits. It shows performance degradation in marathon sessions. It tracks whether you actually play better chess after tightening up following losses or whether you just chase rating back.
For serious students of their own game, this is valuable. You stop guessing at your weaknesses and start seeing them clearly in the data. The tool is free and uses only public game data, so there's no barrier to testing it against your own history.