DarkSquares is a free blindfold chess training app that teaches you to play chess without seeing the board. The progressive 7-level system takes you from basic square colors and coordinates to full blindfold games against AI opponents. Available on web, iOS, and Android.

Blindfold chess: definition and history

Blindfold chess is chess played without sight of a physical board. Players announce their moves in algebraic notation (for example, Nf3, Bc4, O-O) while holding a complete mental picture of the position. It is one of the most demanding tests of working memory, spatial reasoning, and pattern recognition in any game.

The practice dates back over a millennium: the Umayyad-era scholar Sa'id ibn Jubair (665–714) is the earliest documented player to play blindfolded by turning his back to the board. François-André Danican Philidor popularized blindfold play in modern Europe with an 1783 exhibition at Parsloe's Coffee House in London, playing three games simultaneously (winning two, drawing one). The current Guinness-verified world record is 48 simultaneous blindfold games, set by Grandmaster Timur Gareyev over 19 hours and 9 minutes at the University of Nevada Las Vegas on 3 and 4 December 2016, scoring 35 wins, 7 draws, and 6 losses while cycling on a stationary exercise bike.

Benefits of blindfold chess training

Chess masters do not have superior general memory. Their edge is pattern recognition built through thousands of hours of exposure. William Chase and Herbert Simon demonstrated this in their 1973 Perception in Chess study. Masters reconstruct real positions almost perfectly after a 5-second glance, but perform no better than novices on random piece arrangements. The difference is the chunk library they have built.

Blindfold training accelerates that library by removing visual confirmation, which forces the brain to encode each position consciously. Cross-sectional research on chess expertise as a whole — not on blindfold training specifically — is consistent with a domain-specific shift in how chess experts process positions. A 2024 graph theory study in Frontiers in Psychology (Gonzalez-Burgos et al., PMC11442243) compared adult chess players with non-players and reported a three-module cognitive connectome in chess players versus four in non-players, across visual, verbal, and executive processing. fMRI work by Bilalić and colleagues (Journal of Neuroscience, 2011) found chess experts recruit the fusiform face area more strongly than novices when viewing real chess positions, consistent with specialised perceptual expertise rather than general memory.

Practical impact in your own games: players who train visualization lose fewer pieces, reject more dangerous moves under time pressure, and recover more time on the clock because verifying their mental board takes less effort.

The 7-level progressive blindfold curriculum

DarkSquares structures training so each level locks in before the next begins. Skip ahead and most players stall at full blindfold games because their underlying board map is not automatic.

• Level 1. Square colors. Instantly name any square as light or dark. Target: 90 percent accuracy in under 2 seconds per square by day 7 of daily practice.
• Level 2. Coordinates. Locate any algebraic coordinate on the empty mental board. Drill files, ranks, and diagonals until recall is automatic.
• Level 3. Piece paths. Trace knight, bishop, rook, and queen routes between squares without a board.
• Level 4. Position memory. Study a 5 to 10 piece setup briefly, then reconstruct it from memory.
• Level 5. Blindfold tactics. Solve 2 to 3 move puzzles mentally without moving pieces.
• Level 6. Short blindfold games. Play 10 to 20 move games against the AI with pieces hidden.
• Level 7. Full blindfold games. Complete games against 8 AI difficulty tiers with all visualization skills integrated.

Training features and modes

• 5 training categories: Board Vision, Piece Movement, Memory, Tactics, Blindfold Play
• 5 visual difficulty modes: Full Board, Faded, Shadow, Ghost, Blind
• 8 AI difficulty tiers for blindfold games
• XP system with 10 progression tiers from Novice to Immortal
• 20+ achievements and daily challenges
• Leaderboards comparing your progression to other players
• Famous grandmaster games to replay blindfold
• Cross-platform sync across web, iOS, and Android
• Available in English, French, Spanish, German, Portuguese, and Hindi

Free tier and Pro Lifetime pricing

Free to start, no credit card required. The free tier includes unlimited exercises, levels 1 through 3, and AI opponents at difficulties 1 through 3. Pro Lifetime unlocks all 7 levels, all 8 AI difficulties, famous games to replay blindfold, the endgames module, and advanced tactics for a one-time payment of 29 euros. No subscription, no recurring charges.

Who DarkSquares is for

Club players rated between 1200 and 1800 Elo who sense their progression is limited by calculation depth. Players who miss tactics in their own games because they cannot hold positions past three moves mentally. Tournament players 1800+ preparing calculation stamina. Anyone who wants a structured path to blindfold play rather than random attempts.