Turn any chess diagram into a board, a FEN or a Lichess link
Paste a screenshot or drop a photo, from a web page, a book or a paused YouTube lesson. GreyChess scans the position, asks only about the squares it isn’t sure of, and gives you a board to check before you use it.
Scan, then check
The scanned position appears beside the image, with uncertain squares circled. Fix one in a tap and confirm. Nothing is analysed, looked up, opened elsewhere or saved until you do, so you catch a misread piece before it reaches your study.
Edit the position freely: the side to move, castling rights and any square. A diagram cannot show whether castling is still allowed, so it stays off until you say so.
Then take it anywhere
A confirmed board is a starting point.
- Copy the FEN or the PGN, with any moves you played.
- Open it on Lichess’s analysis board, at the move you were looking at.
- Analyse it with Stockfish 18 in your browser, or hide the engine and let it grade your move.
- Save it to your library, or train its key move as a flashcard.
Questions
How do I get the FEN of a chess diagram?
Paste or drop the image into GreyChess, check the circled squares, confirm, and copy the FEN from the board’s menu.
Can it read a photo of a printed board?
It works with screenshots, scans and photos of printed diagrams and boards on screen. A clear, straight image works best; anything it isn’t sure of is circled for you to check.
Does it work during a game?
No. GreyChess is for study, and the terms forbid help during any game.
More of what GreyChess does
Try it on the book you are reading
Start free. Sign in with Google, Lichess or your email.
Read your first diagram