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