level: simple
1.....3.8.6.4..............2.3.1...........958.........5.6...7.....8.2...4....... | initial |
124597368369428517587361924293815746416273895875946132958632471631784259742159683 | solved |
level: simple
Top 95 Sudokus 037 [sudoku:top95] “95 Hard Puzzles”, http://magictour.free.fr/top95, or http://norvig.com/top95.txt