level: simple
4.....5.8.3..........7......2.....6.....5.8......1.......6.3.7.5..2.....1.8...... | initial |
417369528839125746652748319925837461741956832386412957294683175573291684168574293 | solved |
level: simple
Top 95 Sudokus 036 [sudoku:top95] “95 Hard Puzzles”, http://magictour.free.fr/top95, or http://norvig.com/top95.txt