Train smarter. Upgrade to Blunder Book Pro.
Start for free. Subscribe for unlimited training from your own games.
- Solve unlimited puzzles per day
- Sync your 100 most recent computer-analyzed games
- Puzzles made from mistakes and missed opportunities in your imported games
- Compare puzzle solutions to what was played in-game
- Random training mode
- Piece blunder rate insights
- Solve unlimited puzzles per day
- Import all of your computer-analyzed Lichess games
- Puzzles made from mistakes and missed opportunities in your imported games
- Compare puzzle solutions to what was played in-game
- Random training mode
- Spaced repetition training mode
- Filter by time control, date, tactical theme, and minimum time left on clock
- Piece blunder rate insights
- Tactical theme insights — weakest themes, costliest missed tactics
7-day money-back guarantee
- Solve unlimited puzzles per day
- Import all of your computer-analyzed Lichess games
- Puzzles made from mistakes and missed opportunities in your imported games
- Compare puzzle solutions to what was played in-game
- Random training mode
- Spaced repetition training mode
- Filter by time control, date, tactical theme, and minimum time left on clock
- Piece blunder rate insights
- Tactical theme insights — weakest themes, costliest missed tactics
7-day money-back guarantee
Learn from all of your mistakes
Free accounts train on their 100 most recent games. Pro users can import and generate puzzles from their entire Lichess history.
Spaced repetition
Puzzles you miss come back. Puzzles you've mastered fade away. Your training adapts as you fix your tactical weaknesses.
Target your training
Filter puzzles by time control, game date, tactical theme, and time left on clock. Focus on missed sacrifices from this month, exclude blunders made under time-pressure, or drill pins across your game history.
Know your weaknesses
Every user sees which pieces they blunder with most. Pro unlocks tactical theme breakdowns — your weakest themes and costliest missed tactics.
Not happy with your Pro plan? Email us within 7 days of your purchase and we'll refund you, no questions asked.