a view, site, image, that is unclear and difficult to identify

cloud, fog

to fill (a person) with confusion

confuse

to puzzle, bewilder, (a person)

bewilder, confuse

a question or problem that is difficult to understand or answer; a game, toy etc designed to test a person's knowledge, skill or patience; to cause (a person) to become confused, worried (about the solution to a problem)

baffle, confuse