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