There is a well-known puzzle:
A man regularly travels up in a lift to his apartment only part of the way and then takes the stairs. However, when travelling down he travels by lift all the way. Why?
Answer for those who want it although I imagine all puzzlers know it already.
He lives on a high floor of the block. He is a short man who cannot reach the buttons for the upper floors but he can reach the buttons for the lower floors.
I have invented a puzzle with similar characteristics. I'm wondering which tags are most suitable. For the above type of question, I would use situation and geometry but I wouldn't use story although there is a story element to it.
What would people recommend?