Brain Teasers and PuzzlesBrain teasers, puzzles, and riddles carefully curated to challenge and amuse you. Every brain teaser includes a solution/explanation – just go to the puzzle’s page and then click to expand the “Solution” box.Math and LogicAlgebraBasic Math and NumbersGeometryLogic PuzzlesNumber TheoryProbabilityLanguage and VisualCryptography and CodesMatchstick PuzzlesRebusWords and LettersOtherChessGame Theory and StrategyInterview Brain TeasersPatterns, Sequences, and SetsPhysics and ScienceRiddles and Lateral ThinkingBy DifficultyVery EasyEasyMediumHardVery Hard