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