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