Enter your Chess.com username and we'll analyze your most recent game with a humorous (and slightly harsh) critique.
Our platform provides powerful tools to analyze your games and improve your chess skills.
Deep analysis of your chess games with advanced metrics and improvement suggestions.
Explore your opening repertoire and discover new ideas to surprise your opponents.
Automatically identify critical mistakes and missed opportunities in your games.
Track your rating progress over time with detailed statistics and insights.
Seamlessly import your games from Chess.com with a single click.
Get personalized insights and recommendations based on your playing style.
Games Analyzed
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ELO Points Gained (avg)
Join thousands of chess players who are using data-driven insights to take their game to the next level.
“Blunder completely transformed my chess game. I was stuck at 1200 ELO for years, and within 3 months of using the platform, I broke 1350. The personalized feedback on my games is what made all the difference.”
“As someone who's been playing chess casually for years, I was amazed at how quickly Blunder identified my weaknesses. The opening explorer and endgame training have been game changers for me.”
“The tactical pattern recognition feature helped me spot combinations I would have missed before. I've gained over 200 ELO points in just 4 months. Worth every penny of the premium subscription.”