Support

We reply in English and German.

Contact

Write to contact@onyxchess.app. Tell us briefly what happened and include your device and iOS or macOS version.

The scan does not recognize the position correctly

Keep the whole board in the picture, as straight as possible and without glare. Screenshots work best. You can fix single pieces after the scan by tapping them.

The app reports an invalid position

Usually the wrong side is set to move. Tap the button that switches the side to move. Each side needs exactly one king, and there can be no pawns on the first or last rank.

Importing from Lichess or Chess.com does not work

Check the spelling of the username and your internet connection. For Chess.com, only public games are loaded.

Deleting data

All data is stored only on your device. Delete single games in the library, or everything at once by deleting the app.