sys/games/lib/sudoku/boards/hard-2005-05-01.su


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.362..17.
9.....2..
...8.5...
....8.7.6
.5.....3.
3.4.7....
...4.7...
..8.....7
.49..832.
836249175
915763248
472815693
291384756
657192834
384576912
163427589
528931467
749658321