Dudes. It's easy. Do it in REVERSE. I'm up to level 20, took me about 20 minutes, max. You just gotta do it in reverse, and since there's only one possibility, you'll find it in no time. I PUT MY TRUST IN YOU.
For some reason that game wouldn't work for me, so I stumbled upon something completely different. And I promise on pain of banning that there are no scare tactics in this flash
I know there's a logical algorithim for it, but it's still cool.