level: simple
.......217...6....49...........7.9....38......2.......96....8.....3.2......1..... | initial |
356948721712563489498721356184275963673819245529634178961457832845392617237186594 | solved |
level: simple
See http://forum.enjoysudoku.com/17-clue-puzzles-t32953.html