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