xref: /plan9-contrib/sys/games/lib/sudoku/boards/hard-2005-05-14.su (revision a8e650f8b6804428114023f948a3fb1a4d7b82d3) 
1..5..6...
226..95.7.
3..9......
491...7.8.
5..39.81..
6.7.1...39
7......7..
8.3.64..98
9...5..2..
10345786912
11261395874
12789421356
13916237485
14453968127
15872154639
16524819763
17137642598
18698573241
19