xref: /plan9-contrib/sys/games/lib/sudoku/boards/hard-2005-04-07.su (revision a8e650f8b6804428114023f948a3fb1a4d7b82d3) 
1.7.6.5...
25..14.9.6
3..4.....2
44.....397
5.........
6732.....4
72.....6..
81.6.38..5
9...5.1.2.
10973625148
11528147936
12614389752
13461852397
14859473261
15732916584
16285794613
17196238475
18347561829
19