0 0 0 0 0 0 7 0 0
0 0 0 0 0 0 0 0 0
0 3 0 0 7 0 5 0 5
0 0 0 4 0 0 0 0 0
0 0 0 0 0 0 0 0 0
0 0 0 0 0 4 0 0 0
3 0 2 0 6 0 0 5 0
0 0 0 0 0 0 0 0 0
0 0 5 0 0 0 0 0 0
