level: simple
1.....3.8.7.4..............2.3.1...........958.........5.6...7.....8.2...4....... | initial |
129576348376428519584391627293815764417263895865749132958632471731984256642157983 | solved |
level: simple
Top 95 Sudokus 015 [sudoku:top95] “95 Hard Puzzles”, http://magictour.free.fr/top95, or http://norvig.com/top95.txt