FEN (Forsyth-Edwards Notation) notation is used to describe the layout of chess pieces on a board. It can be used to describe alternative layouts of pieces, for example in a chess puzzle, or a chess variant game.
Convert an Image to FEN
- Scan and Analyze chess positions | Chessvision.ai
- Chessboard Recognizer: Open-source tool on GitHub
- Chessify
- CheSScan
- Chess Diagram Scanner