xref: /plan9-contrib/sys/games/lib/sudoku/boards/medium-2005-04-29.su (revision a8e650f8b6804428114023f948a3fb1a4d7b82d3) 
15.1....7.
2..94....2
3.6..1.9.8
4...1..784
5.........
6254..6...
74.5.7..3.
81....24..
9.9....1.5
10541298673
11879463512
12362517948
13936125784
14718349256
15254786391
16425671839
17183952467
18697834125
19