level: simple
.......23...5...8....1......2....9.....4..1..58.......6....95......2..7...1...... | initial |
715984623936572481248163795124357968367498152589216347672839514453621879891745236 | solved |
level: simple
See http://forum.enjoysudoku.com/17-clue-puzzles-t32953.html