Via this post on Nexen.net today, there's a pointer to a few Sudoku puzzle resources that use PHP for a variety of reasons.
They hhave four items listed:
- Sudoku in PHP
- a Freshmeat Sudoku project
- the source for a sudoku puzzle solver
- a Sudoku solver class from PHPClasses.org
Personally, I just enjoy working them - the solvers take the fun out of them. I can, however, see where they might come in handy if you don't have the answers where you can get at them...