# Brain teaser

## Puzzle requiring thought to solve / From Wikipedia, the free encyclopedia

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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.

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For the British game show, see BrainTeaser.

One of the earliest known brain teaser enthusiasts was the Greek mathematician Archimedes.^{[1]} He devised mathematical problems for his contemporaries to solve.