Progressive blindfold chess training from square recognition to full games
A daily games hub with no ads
Stage
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Founded
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Based in
FR
SG
Pricing model
Freemium
Freemium
Pricing
Free: €0 forever with unlimited exercises, games vs AI, and access to levels 1-3. Pro Lifetime: €39 one-time payment for all 7 levels, all 8 AI difficulties, famous games library, endgame training, and intermediate tactics.
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Key features
7 progressive training levels from square colors to full blindfold games
Unlimited exercises and games against AI
Voice-controlled play in 6 languages
Progress tracking and achievement system
Cross-device synchronization
Famous grandmaster games to replay blindfolded
Endgame training module
Multiple board visibility modes
Tactical puzzles and exercises
Daily puzzle refresh at midnight UTC
Friends and leaderboards
Sign in with Apple for cross-device progress
Restricted version for players under 13
Local storage of streaks and counts
What makes it different
Systematic progression from fundamentals to blindfold mastery, not just a side effect of puzzle training
Free tier is genuinely free with no dark patterns or engagement manipulation
One-time €39 lifetime payment with no subscription required
Built and maintained by a single indie developer actively improving the product
Available across web, iOS, and Android with unified account
Variety of game types: word, logic, number, trivia and arcade games
No tracking or login required - all progress stored locally
New set of games every day
Child-safe with restricted features for players under 13
DarkSquares
Crux