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