Hello.

Is it possible to create a script which can solve sudoku puzzels.

so for people who know how the puzzel works will get this.

so you can have a grid of input fields which you enter the numbers privded and it can then work it out to give the full grid..

Yes, it's certainly possible -- with brute force being the least elegant method I suppose. A quick Google search found a php class built specifically for solving some sudoku puzzles: http://www.phpclasses.org/browse/package/2550.html

Wikipedia has some great content on Sudoku, including algorithms. Check out the following resources:
http://en.wikipedia.org/wiki/Mathematics_of_Sudoku
http://en.wikipedia.org/wiki/Algorithmics_of_Sudoku