While on the island of Delzzup, you have been captured by the Evil Prince. He has decided to play a game with you.
He offers you the choice of two doors, behind one of which lies a hungry lion and behind the other lies treasures beyond your wildest dreams. Guarding one of the doors is a guard who always lies and guarding the other door is a guard who always tells the truth.
Unfortunately, you cannot tell which is which. You may ask one of the guards for help in choosing the door. They both know which door they are guarding, so what single question could you ask?