A brain teaser is a form of puzzle that requires thought to solve. It often requires thinking in unconventional ways with given constraints in mind; sometimes it also involves lateral thinking. Logic puzzles and riddles are specific types of brain teasers.
One of the earliest known brain teaser enthusiasts was the Greek mathematician Archimedes. He devised mathematical problems for his contemporaries to solve.
Famous quotes containing the word brain:
“The shepherd is the brain behind the dog’s brain,
But his control of dog, like dog’s of sheep
Is never absolute—that’s the beauty of it.”
—Cecil Day Lewis (1904–1972)