xref: /plan9-contrib/sys/games/lib/sudoku/boards/hard-2005-04-24.su (revision a8e650f8b6804428114023f948a3fb1a4d7b82d3) 
11.......8
24...3.5..
3.831...47
4.....5.9.
5.32...46.
6.5.2.....
796...813.
8..8.2...6
93.......4
10195467328
11476832519
12283159647
13741685293
14832791465
15659243781
16964578132
17518324976
18327916854
19