How does it all work?Thanks to everyone for visiting - you can get Sudoku Grab from the app store for 99cents. I get the odd email from people asking how Sudoku Grab works. I've replied to quite a few individually, but I thought it would be much easier to just explain it on the blog. Also when I demo the app people are often amazed (and equally, some people are also often not amazed...). For the ones that are amazed t
