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

5 0 7  0 0 0  0 9 0
0 9 0  6 0 0  5 0 7
6 0 0  0 0 0  3 0 0

0 0 6  1 0 0  2 8 0
0 7 0  9 0 8  0 0 0
0 0 0  0 0 0  0 0 1

hard 
any comments may be put here
following data...

