harvey/sys/games/lib/sudoku/boards/hard-2005-04-22.su

9..7....4
.4..3....
..2..6.3.
..7.....6
6.92.74.3
8.....7..
.5.3..9..
....6..5.
2....5..1
963718524
145932678
782546139
537184296
619257483
824693715
458321967
371469852
296875341