Blundr studies every game you play, identifies the recurring mistakes holding you back, and builds a personalized training program around your chess — not generic content.
No credit card • Web + iOS (V2) • Built with Stockfish + GPT
Top weakness
You hang pieces under pressure (–2.4 swing avg)
Tactics rating
1,432 ▲ 18 this week
Coach says
Slow your openings down — you make 3 of every 5 blunders in the first 12 moves.
The AI builds a living model of your style — what you do well, what trips you up — and adapts every drill to that profile.
Forks, pins, mating nets, sacrifices. We pick the puzzle themes you fail at most. Your weakest squares become your sharpest.
Build a real repertoire with spaced-repetition drills. The AI plays your opponent's nasty sidelines until you're ready.
Every game gets a conversational review. Not 'mistake on move 14' — instead, why it's a mistake and what idea you missed.
Track rating, accuracy, and confidence over time. See how your endgame coverage shifts after one focused week.
Pick your coach: patient mentor, witty quipster, GM-style purist, or one-line minimalist. The tone, your way.
Play games against AI bots tuned to your level — or other humans (V2).
Stockfish + AI review every position. Mistakes are tagged with structured habits.
Personalized puzzles, opening drills, and lessons appear, weighted by your real weaknesses.
Sign up, play a few games, and watch your training plan materialize.