Hi, I made a free online site where you can solve sudokus. There are three difficulty levels, both symmetrical and asymmetrical sudokus, and unlimited sudokus to solve, because they are generated online for you.

Try it out: http://sudoku.netgubbi.dk

If you want to help me translate the webpage from English or Danish to Italian, please send me an email:
hermund (at) itu.dk

Ciao, Frederik.