challenge-086/athanasius/Sudoku-Data/Hard.dat


1
2
3
4
5
6
7
8
9
10
11

_ 9 _ 3 _ _ _ _ _
_ _ 7 _ _ _ 6 _ _
_ _ _ _ 2 4 _ 3 _
9 1 _ _ _ _ _ _ 8
_ _ _ _ _ _ _ _ _
4 _ _ _ _ 5 _ 2 7
_ 5 _ 8 7 _ _ 6 _
_ _ 1 _ _ _ 5 _ _
_ _ _ 5 _ 6 _ 9 _

https://sudoku.com.au/Unsolvable-Sudoku-16.aspx