xref: /plan9-contrib/sys/games/lib/sudoku/boards/hard-2005-05-15.su (revision a8e650f8b6804428114023f948a3fb1a4d7b82d3) 
17...1...6
2..25.4...
3..4.9....
42....58.3
5.5.2.6.7.
61.79....2
7....8.3..
8...3.19..
94...2...8
10735812496
11982564731
12614793285
13269175843
14358246179
15147938652
16521489367
17876351924
18493627518
19