# DarkSquares > Free blindfold chess training app. 7 progressive levels from square recognition to full blindfold games. Available on Web, iOS, and Android. DarkSquares helps chess players develop visualization and board memory through structured exercises. Training is organized as a progression: players start by recognizing square colors and coordinates, then learn piece movement without the board, then work on visualization, puzzles, and position memory, and finally play full games blindfolded against an AI. Registered free accounts get unlimited exercises and games on the free blindfold levels (voice-controlled games are limited to 1 per day; anonymous visitors are capped at 1 exercise and 1 game per day). Pro Lifetime, a one-time purchase of EUR 39 on the web, unlocks all 7 blindfold levels, the strongest AI difficulty levels, famous games, and endgame drills. There is no subscription. ## Core pages - [Home](https://darksquares.net/): Product overview and landing page. - [Train](https://darksquares.net/train): Entry point to all blindfold training exercises. - [Play](https://darksquares.net/play): Play blindfold games against an AI with adjustable difficulty and blindfold level. - [Pricing](https://darksquares.net/pricing): Free tier vs Pro Lifetime (one-time purchase). - [Leaderboard](https://darksquares.net/leaderboard): Global player rankings. ## Training exercises - [Square colors](https://darksquares.net/train/square-colors): Identify light/dark squares by name. - [Coordinates](https://darksquares.net/train/coordinates): Name squares by file and rank. - [Quadrants](https://darksquares.net/train/quadrants): Recognize board regions quickly. - [Diagonals](https://darksquares.net/train/diagonals): Train diagonal awareness. - [Knight movement](https://darksquares.net/train/knight-movement) and [Knight maze](https://darksquares.net/train/knight-maze): Knight path visualization. - [Bishop movement](https://darksquares.net/train/bishop-movement) and [Bishop maze](https://darksquares.net/train/bishop-maze): Bishop path visualization. - [Visualization](https://darksquares.net/train/visualization): Track pieces mentally across a sequence of moves. - [Attack detection](https://darksquares.net/train/attack-detection): Spot threats on blindfold positions. - [Position memory](https://darksquares.net/train/position-memory), [intermediate](https://darksquares.net/train/position-memory-intermediate), [expert](https://darksquares.net/train/position-memory-expert): Memorize and recall positions. - [Position reconstruction](https://darksquares.net/train/position-reconstruction): Rebuild a position from memory. - [Puzzles](https://darksquares.net/train/puzzles), [advanced](https://darksquares.net/train/puzzles-advanced), [expert](https://darksquares.net/train/puzzles-expert): Tactics training with progressive blindfold levels. - [Blind puzzle moves](https://darksquares.net/train/blind-puzzle-moves): Solve puzzles without seeing the board. - [Endgames](https://darksquares.net/train/endgames): Blindfold endgame technique. - [Famous games](https://darksquares.net/train/famous-games): Replay classic games blindfolded. ## Learn (guides) - [Blog](https://darksquares.net/blog): Articles on blindfold chess, visualization, and training. - [Blindfold chess](https://darksquares.net/learn/blindfold-chess): What blindfold chess is, how to start, and the step-by-step 7-level method. - [Chess visualization](https://darksquares.net/learn/chess-visualization): Techniques to improve board visualization. - [Chess memory training](https://darksquares.net/learn/chess-memory-training): Methods for training chess memory. ## Legal - [Terms](https://darksquares.net/terms) - [Privacy](https://darksquares.net/privacy) - [CGS](https://darksquares.net/cgs) ## Optional - [Contact](https://darksquares.net/contact) - [Sitemap](https://darksquares.net/sitemap.xml)