level: simple
2.3.8....8..7...........1...6.5.7...4......3....1............82.5....6...1....... | initial |
273681495891754263546392178169537824485269731327148956734916582958423617612875349 | solved |
level: simple
Top 95 Sudokus 049 [sudoku:top95] “95 Hard Puzzles”, http://magictour.free.fr/top95, or http://norvig.com/top95.txt