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