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