Screenshot → position
Turn a chessboard into FEN.
Upload a clean 2D board screenshot, align the crop, and classify all 64 squares directly on your device.
1. Choose a screenshot
Choose a screenshot or photo from your device. The board can be part of a larger image.
Private by design. Your screenshot is decoded and classified locally in this browser; it is never uploaded to an inference server.
2. Align the board
Drag inside the square to move it. Drag a corner to resize it around the 8×8 grid.
3. Review the position
Classified 64 squares locally.
Your crop
Predicted board
Appearance groups
Select a group to highlight its squares.
Correct a prediction
Click a group icon or any square on the predicted board. Group corrections are fixed while the remaining groups are reassigned.
Detected board FEN
Assumed complete FEN
Castling rights, en passant target, and move clocks are assumed—not detected from the image.
Per-square predictions
| Square | Prediction | FEN | Confidence |
|---|