level: simple
......8.16..2........7.5......6...2..1....3...8.......2......7..4..8....5...3.... | initial |
724369851651248793893715642375691428912874365486523917238456179147982536569137284 | solved |
level: simple
Top 95 Sudokus 073 [sudoku:top95] “95 Hard Puzzles”, http://magictour.free.fr/top95, or http://norvig.com/top95.txt