xref: /plan9-contrib/sys/games/lib/sudoku/boards/hard-2005-05-07.su (revision a8e650f8b6804428114023f948a3fb1a4d7b82d3) 
158...7...
2..645.8..
3..7.3...1
41....9.2.
58.......6
6.6.2....4
77...9.2..
8..1.239..
9...8...13
10589617432
11316452879
12427938561
13154769328
14872345196
15963281754
16738196245
17641523987
18295874613
19