level: simple
......8.17..2........5.6......7...5..1....3...8.......5......2..3..8....6...4.... | initial |
253479861761238594894516732326791458915824376487653219548167923132985647679342185 | solved |
level: simple
Top 95 Sudokus 079 [sudoku:top95] “95 Hard Puzzles”, http://magictour.free.fr/top95, or http://norvig.com/top95.txt