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