Sudoku

Hi! I like to do the Sudoku number puzzles when I have time. I have found a site that explains how to solve them ,especially if you have a tough one. It's http://www.palmsudoku.com/ . I will post more sites for Sudoku , as I find them.If you have aPalm OS , which I don't ,and don't even know what one looks like , you can download Sudoku puzzles from the above site. As far as I understand , it's free.