Progressive blindfold chess training from square recognition to full games
Free NFL playoff bracket maker, predictor, and Super Bowl squares tool
Stage
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Founded
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Based in
FR
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Pricing model
Freemium
Free
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
Make playoff picks by clicking teams to choose winners
Rename any seed in the bracket
Share brackets via URL without accounts
Printable NFL playoff brackets
Super Bowl squares grid for pools
Playoff picture with current standings and seeds
Playoff scenarios page for what-if testing
Friends playoff pool with leaderboard scoring
Load current seeds from public standings
Reset to chalk to restore starting seeds
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
Completely free with no accounts, paywalls, or clutter
Fan-made project built specifically for clean, printable brackets
No login required; brackets stay in shared links
Seeds load from current public standings automatically
Privacy-respecting with no personal data collection
DarkSquares