Paper puzzle (4)
I believe the answer is:
maze
'paper puzzle' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for maze that I've seen before include "A famous one is at Hampton Court" , "Complicated network of paths, a labyrinth" , "A labyrinth of hedges - easy to get lost in" , "Labyrinth, tangle" , "confusion" .)