level: simple
.8..4....3......1........2...5...4.69..1..8..2...........3.9....6....5.....2..... | initial |
781942365324576918659831724815723496936154872247698153578369241162487539493215687 | solved |
level: simple
Top 95 Sudokus 034 [sudoku:top95] “95 Hard Puzzles”, http://magictour.free.fr/top95, or http://norvig.com/top95.txt