xref: /plan9-contrib/sys/games/lib/sudoku/boards/hard-2005-04-17.su (revision a8e650f8b6804428114023f948a3fb1a4d7b82d3) 
16........
2...1..97.
3.9..4.1.2
43..9...16
5...435...
624...1..8
74.5.7..2.
8.26..3...
9........5
10612397584
11584126973
12793548162
13357982416
14861435297
15249761358
16435679821
17126853749
18978214635
19