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

0 0 0  0 0 0  9 0 0
0 0 0  5 9 0  1 0 4
7 0 0  2 0 1  0 5 0

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