Could anyone please help look into the issue mentioned in the subject line?
There is no marking "xv" for item 10 in Sudoku 2025 GP7.
Thanks a lot.
In XV Sudoku, negative clues are allowed. So if there are no XV clues at all, it is still a correct puzzle, and it means that the sum cannot be 5 or 10 anywhere.
Negative clues
In XV Sudoku, negative clues are allowed. So if there are no XV clues at all, it is still a correct puzzle, and it means that the sum cannot be 5 or 10 anywhere.