So I only got 9 :P I like this concept but really wish I could undo by moving backwards as many times I moved too fast because of the sense of urgency it had and ended up overshooting and getting the wrong value. I also find it hard to read the numbers when anxiety kicked in...probably part of the design :D However, I know it is all an illusion as there has to be an answer available to all the problems...right?....right? I think I've gone mad! :D lol