harvey/sys/games/lib/sudoku/boards/hard-2005-04-30.su

1.....5..
.562.4...
.2.1..3..
.9..51..4
7.......5
8..32..1.
..7..6.5.
...5.216.
..9.....3
178963542
356274891
924185376
692851734
731649285
845327619
217436958
483592167
569718423