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