About GreyChess

Why GreyChess exists

Books are still where most players go to learn the game in depth: the openings, the endgames, the great games explained. But reading one means setting up every diagram by hand on a board or in an app, and losing your place each time.

GreyChess puts the board beside the page instead. It finds the diagrams as you read, reads each one into a board, and fits the moves printed after it, so you play through the book rather than copy it. The same reader works on a screenshot, a photo of a board or a paused video.

What GreyChess does today

• Reads PDF and ePub chess books with a live board beside every diagram, and reads the pages aloud.
• Turns a chapter’s diagrams into a course of positions to learn, then flashcards until you know them.
• Runs Stockfish 18 in your browser, and opens any position on Lichess with its moves.
• Reviews your own games from Lichess and Chess.com, from brilliant moves to blunders.
• Trains you with 33,146 rated puzzles in 72 themes, 84 lessons in 8 topics (27 of them free), 399 studies and flashcards that come back when you are about to forget them.
• Gives chess academies classes, homework, live lessons and reports for their students.

How we work

• Your books stay yours. A book you open stays on your device. To read a diagram, your browser turns it into numbers, and only those numbers are sent.
• Checked before it ships. Every lesson’s positions and answers are checked by the rules, the endgame tablebase or the engine.
• Paid for by players. GreyChess is paid for by the players and academies who choose Pro. Free has daily limits.
• Plain chess words. The app uses the words players already know from Lichess and Chess.com: accuracy, blunders, time trouble, candidates.

Get in touch

Questions, ideas and problems all go to support@greychess.com. Answers to common questions are on Help and support, and who sells GreyChess, with where to send a complaint, is on Contact and complaints.