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

0 0 0  0 0 7  0 0 0
0 0 1  0 5 0  9 0 0
0 0 0  1 0 0  0 0 0

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