to be too difficult for (a person) to do, understand etc

perplex

the cheat; trick (a person)

fool; cheat

to confuse (a person)

confuse

to make (a person) feel uncertain, puzzled etc

bewilder someone

to take away (a person's) attention, concentration etc

divert attention; confuse

to puzzle or confuse (a person)

confuse, mix up

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