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