You've been challenged
A friend has sent you a Sudoku Through Time puzzle.
The button only works once the app is installed. If you do not have it yet, use the store badges below first.
Or copy this code and use Enter Friend Code in the app.
Sudoku Through Time is a calm, ad free sudoku across five ages of history. Friends can send you a puzzle or a challenge as a link, a QR code, or a short code you type in yourself. There are no accounts and no internet play.
If someone has sent you a link and it has not shown a challenge above, ask them to resend it: the code lives entirely in the link itself.