harvey/sys/games/lib/sudoku/boards/hard-2005-05-14.su

..5..6...
26..95.7.
..9......
91...7.8.
..39.81..
.7.1...39
......7..
.3.64..98
...5..2..
345786912
261395874
789421356
916237485
453968127
872154639
524819763
137642598
698573241