There are many Sudoku solvers out there. Most have one or more of the following weaknesses:
- They require you to download and/or install an application
- They require some plug-in (e.g. Java, Flash)
- They require you to submit your puzzle to the server (hence the processing is not done in your client and you must be connected)
- They use a simple brute-force algorithm to find a solution
- They are not free
note: don't worry - I am still busy working on things that need to be done. This was an old post that I had waiting in the wings for a while.