./i \
0 9 0 7 0 0 0 6 0 \
0 0 0 0 9 0 0 0 0 \
5 0 0 0 1 0 2 4 9 \
0 0 7 1 6 0 0 0 0 \
1 0 0 2 7 9 0 0 6 \
0 0 0 0 5 3 7 0 0 \
3 6 5 0 2 0 0 0 1 \
0 0 0 0 4 0 0 0 0 \
0 2 0 0 0 1 0 7 0 
    
