Stop Playing.
Start Thinking.
Chess training that builds real decision-making — not just pattern memorization.
White to move — find the checkmate
Why blunder.life?
Stop memorizing moves. Start understanding chess.
Train Your Thought Process
A 4-step checklist before every move — opponent intent, forcing moves, positional play, blunder check. It's the habit that separates beginners from improvers. No other chess site teaches you HOW to think.
Hear Why Every Move Matters
AI explains each move in plain English — why it's brilliant, dubious, or a blunder. No more staring at +0.3 wondering what it means.
Never Forget Your Preparation
Build your repertoire with a Lichess-powered explorer, then drill your lines using spaced repetition. The same algorithm Duolingo uses, applied to chess openings.
Train
Themed Tactical Training
200,000+ puzzles organized by theme — forks, pins, skewers, discovered attacks. Difficulty matched to your rating.
Game Library & Import
Import your Lichess games in bulk, browse your history, and analyze any game with engine commentary.
Play
Play vs Stockfish
Practice against Stockfish at any level with real-time analysis and voice commentary as you play.
Challenge Friends
Create a challenge link, pick your time control, and play against anyone. Resume games from anywhere.
Coming Soon
How We Compare
blunder.life focuses on learning, not just playing.
| Feature | blunder.life | chess.com | Lichess |
|---|---|---|---|
| Thinking Framework | |||
| Voice Commentary | |||
| Spaced Repetition Openings | |||
| Themed Puzzle Training | 200K+ rating-matched | ||
| Game Analysis | Stockfish | Paid | Free |
| Opening Explorer | |||
| Multiplayer | Friends | Matchmaking | Matchmaking |
| Game Library | Lichess import | ||
| Price | Free / $5 mo | Free / $99 yr | Free forever |
Thinking Framework
Voice Commentary
Spaced Repetition Openings
Themed Puzzle Training
Game Analysis
Opening Explorer
Multiplayer
Game Library
Price
Simple Pricing
Start free with daily limits on every feature. Upgrade for unlimited access to 4M+ puzzles, full opening repertoires, endgame training, and master game studies.
Free
$0/mo
- Play vs Stockfish at any level
- 4-step thinking framework
- 5 puzzles/day (all themes)
- 5 voice commentaries/day
- 1 PGN analysis/day
- 1 opening repertoire, 10 lines
- Basic endgame positions
- Depth 12 engine
Pro
$4.99/mo
- Everything in Free, plus:
- Unlimited themed puzzles
- Full opening repertoire builder
- Complete endgame trainer
- 100+ master game studies
- Performance analytics & insights
- Unlimited PGN analysis
- Depth 22 engine