The difficulty of these is all over the map. Possibly the most difficult one is "Opening boxes in a prison courtyard". If you can solve this without any hints o

The difficulty of these is all over the map. Possibly the most difficult one is "Opening boxes in a prison courtyard". If you can solve this without any hints or help, and by solving it I mean working out a strategy that gives prisoners at least 30% chance of surviving, then you just may be a genius. Or at least very, very smart.