level: simple
.476...5.8.3.....2.....9......8.5..6...1.....6.24......78...51...6....4..9...4..7 | initial |
947628351863751492125349678734895126589162734612473985478236519256917843391584267 | solved |
level: simple
Top 95 Sudokus 043 [sudoku:top95] “95 Hard Puzzles”, http://magictour.free.fr/top95, or http://norvig.com/top95.txt