cs486/a1/sudoku_problems/31/6.sd

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