Normal sudoku rules apply.
Digits separated by a grey dot have a difference of either 1 or 3.
All possible dots are given.
Solution code: row 9
on 10. April 2023, 15:16 by Bankey
Fun puzzle. Thanks, @ Scruffamudda :)
on 29. March 2023, 15:12 by Ragna
Das hat viel Spaß gemacht! Super interessante Regel.
Dankeschön. :-))