This sudoku has been created for the italian sudoku championship ("Campionato Italiano Sudoku") 2022. Because it was seen as too difficult, it won't be used there and can be enjoyed here instead.
Rules: Standard sudoku rules apply. Digits in grey cells indicate the distance to the 9 in that row or column (or both).
Solution code: Row 4 and column 2
on 1. September 2022, 13:32 by marcmees
lucky Italians :-). tough one. thanks