xref: /plan9-contrib/sys/games/lib/sudoku/boards/hard-2005-04-02.su (revision a8e650f8b6804428114023f948a3fb1a4d7b82d3) 
1.....96..
2...15....
358..37..4
43......8.
51.6...4.7
6.2......6
77..86..91
8....23...
9..37.....
10237489615
11469152873
12581637924
13374516289
14156298437
15928374156
16742865391
17615923748
18893741562
19