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