level: simple
4.....8.5.3..........7......2.....6.....8.4......1.......6.3.7.5..2.....1.4...... | initial |
417369825632158947958724316825437169791586432346912758289643571573291684164875293 | solved |
level: simple
Top 95 Sudokus 001 [sudoku:top95] “95 Hard Puzzles”, http://magictour.free.fr/top95, or http://norvig.com/top95.txt