TheCoreWithin

I couldn't solve it yet. Maybe I am too tired :)
http://www.mathpuzzle.com/20questions.htm
http://www.drunkmenworkhere.org/170

I've done too many of those kinds of puzzles. Unless you're a certified genius, you can't "figure it out". Ends up being two hours of trial and error, and then you end up impressing one or two people at best, never of the oposite sex.

Not trying to ruin your fun, just saying that memorizing decimals of pi beats puzzles any day of the week.