/usr/web/sources/plan9/sys/games/lib/sudoku/boards/hard-2005-04-17.su

Plan 9 from Bell Labs’s /usr/web/sources/plan9/sys/games/lib/sudoku/boards/hard-2005-04-17.su


6........
...1..97.
.9..4.1.2
3..9...16
...435...
24...1..8
4.5.7..2.
.26..3...
........5
612397584
584126973
793548162
357982416
861435297
249761358
435679821
126853749
978214635

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