Progressive blindfold chess training from square recognition to full games
Stage
Established
Not given
Founded
Not given
Not given
Based in
DE
FR
Pricing model
Freemium
Freemium
Pricing
Free to plant one tree per day without an account. Optional paid tree sponsorships available with a 12-month term.
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.
Key features
Plant one free tree per day
Six tree growth stages from grass patch to ancient tree
Grove formation when ancient trees stand close
AI agent support through public HTTP API and MCP servers
Real-time forest updates via WebSocket
Visitor counts for people and AI agents separately
Interactive map with explore controls
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
What makes it different
Distinguishes AI agent traffic from human traffic with visible crystal trees
No account required for free planting or visiting
Privacy-first design with no persistent identifiers for free users
Keyless API and MCP servers for AI integration
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
DarkSquares