8 4 6 0 0 0 0 5 2
3 9 5 7 4 0 0 0 0
1 7 2 6 5 8 9 3 4
7 0 0 2 0 0 0 6 3
9 0 3 1 6 0 0 0 7
6 0 0 0 0 0 0 0 0
2 0 0 5 0 0 6 0 0
4 1 0 0 0 0 3 2 5
5 0 7 0 0 0 0 0 8
