by Craig Harris:
Puzzles range in difficulty, from the absolute obvious to the downright devious. Remember Die Hard with a Vengeance? You'll find a ton of variations of the puzzles that Jeremy Irons dishes out to Bruce Willis, including that "pour the liquid" challenge…but this time it's not to disarm any bombs. Many puzzles really need to be calculated, but others are trick questions. And sometimes these trick questions are simple to spot: if the script is throwing several numbers at you, you can pretty much guarantee that these numbers are just to throw you off and the answer is a lot simpler than the text is letting on.