Bests & Worsts Reviews from Amazon

I like playing sudoku and I have one on my iphone that I like the best so looking for one for my kindle fire. I wanted one that after you have your notes and figure out the number that number would disappear in the box next to it after you put the number in. not this app, you have to go back yo notes to delete the number so you don't. get confuse that you already used that number in the area. I did find an app that does what I want and more plus free, andoku sudoku