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