level: simple
45.....3....8.1....9...........5..9.2..7.....8.........1..4..........7.2...6..8.. | initial |
458276931623891475197534286371452698269783154845169327712948563986315742534627819 | solved |
level: simple
Top 95 Sudokus 018 [sudoku:top95] “95 Hard Puzzles”, http://magictour.free.fr/top95, or http://norvig.com/top95.txt