Progressive blindfold chess training from square recognition to full games
Free 5 letter word finder and Wordle solver
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
Search by starting letter, ending letter or containing letters
Wordle solver with green, yellow and grey clues
Display Scrabble scores and sort by score
Find 3, 4, 6 and 7 letter words
Random word generator
Pattern search with wildcards
Unscramble letters to find words
8,636 five-letter words in database
Daily Word Challenge puzzle
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
Free with no sign-up or clutter required
Built on public-domain ENABLE word list with 8,636 words
Highlights 2,120 most likely Wordle answers
Tested strategies for best starting words
Works for Scrabble, Words With Friends and crosswords
DarkSquares
5lettersword