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