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