Brain Teasers are mentally challenging puzzles (often in the form of a question or story) that can be solved by applying logic or other mental skills. Brain Teasers Puzzles Games.
- Wikipedia: 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.
- Board game - A board game is a tabletop game that involves counters or moved or placed on a pre-marked surface or "board", according to a set of rules. Some games are based on pure strategy, but many contain an element of chance; and some are purely chance, with no element of skill.
- Mathematical game - A mathematical game is a game whose rules, strategies, and outcomes are defined by clear mathematical parameters. Often, such games have simple rules and match procedures, such as Tic-tac-toe and Dots and Boxes.
- Mensa - Mensa is the largest and oldest high IQ society in the world. It is a non-profit organization open to people who score at the 98th percentile or higher on a standardized, supervised IQ or other approved intelligence test.
- Mind sport - A mind sport is a game of skill where the competition is based on a particular type of the intellectual ability as opposed to physical exercise.
- Boy or Girl paradox - The Boy or Girl paradox surrounds a set of questions in probability theory which are also known as The Two Child Problem, Mr. Smith's Children and the Mrs. Smith Problem.
- Puzzles
- Collection AVAV
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Collection of optical illusions, AVAV, brain teasers and riddles. AVAV. - Offers Brain Teaser World
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Offers riddles, Teaser World, puzzles, optical illusions, and magic tricks. Brain Teaser World. - A Pzzls
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A collection of logic puzzles, Pzzls, riddles and brain teasers. Pzzls. - Brain BrainBashers
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Brain teasers, BrainBashers, puzzles, riddles, games and optical illusions. BrainBashers. - Huge The Amazing Art Site
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Huge collection of optical illusions, Amazing Art Site, hidden imagery, ambiguous art and upside downs. The Amazing Art Site. - Weekly Eyetricks: Brain Teasers
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Weekly puzzles and archives. Eyetricks: Brain Teasers. - Recreations Thinks.com
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Recreations for active minds including games, Thinks.com, puzzles, math, words, images, books, software and web guide. Thinks.com. - Some Puzzability
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Some real mind benders here. Puzzability. - An Rec.puzzles Archive
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An archive of many popular puzzles from the rec. Archive.puzzles newsgroup. Rec.puzzles Archive. - Collection All-Star Puzzles: Logic Problems
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Collection of logic problems to solve. Puzzles: Logic Problems. Printable. All-Star Puzzles: Logic Problems. - Free, Puzzles Without Rules
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Free, Without Rules, updated, original abstract puzzles for advanced puzzle-solvers. Includes current unsolved puzzle and archive with hints and solutions. Puzzles Without Rules. - A Bill's Brain Teasers
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A collection of visual and linguistic riddles. Bill's Brain Teasers. - Collection BrainVista
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Collection of solved and unsolved brain teasers. BrainVista. - Word Word Juxtapoz
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Word puzzles, Juxtapoz, riddles, rebuses, brain teasers, mazes, cliparts and pictures. Word Juxtapoz. - Crosswords National Puzzlers' League
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Crosswords and other word puzzles and games, Puzzlers' League, samples; monthly puzzle magazine; 800,000 word searchable list. National Puzzlers' League. - Easy, Abnorm's Conundrums
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Easy, Conundrums, medium and difficult brain teasers without answers. Abnorm's Conundrums. - A The Grey Labyrinth
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A beautifully illustrated collection of puzzles, Grey Labyrinth, riddles, and paradoxes. Features a changing "unsolved puzzle" plus three years worth of previous puzzles. The Grey Labyrinth. - Collection The Logic Zone
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Collection of logic problems, Logic Zone, logic puzzles and cryptograms with answers. Graded levels of difficulty including some especially for kids. The Logic Zone. - Paradoxes, Curiouser.co.uk
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Paradoxes, Curiouser.co.uk, puzzles, games, optical illusions, poetry, curious facts, and quotations. Curiouser.co.uk. - Over PedagoNet Brainers
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Over 60 brain teasers to enhance your mind. PedagoNet Brainers. - Brain Brain Teasers
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Brain teasers, Teasers, riddles, logic puzzles and problems, paradoxes, optical illusions, IQ tests and logical games. Brain Teasers. - A A Game A Day
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A puzzle site featuring a new puzzle format each weekday for each month. Game A Day. Puzzles are fun, educational, entertaining and are also printable. A Game A Day. - Includes Braingle
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Includes a huge collection of user submitted and rated brain teasers and riddles. Braingle. It also has a message board and some unique multi-player games. Braingle. - Recreational Archimedes' Laboratory
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Recreational mathematics including puzzles to make and solve, Laboratory, tessellations, geometric puzzles, optical illusions, and curiosities. Archimedes' Laboratory. - A BrainBall
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A daily brain puzzle with 10 different tasks and a variety of statistics on your performance. BrainBall. - Riddles, Just Riddles and More
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Riddles, Riddles and More, illusions, puzzles, and brain teasers. Just Riddles and More. - An Planetarium
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An on-line puzzle story in twelve weekly installments. Planetarium. - Puzzles A Puzzlemakers Site
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Puzzles of all descriptions. A Puzzlemakers Site. - It's Confusion
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It's a challenge to reach the end of this puzzle maze. Confusion. - A BrainBoggled.com
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A collection of math, BrainBoggled.com, logic, and word puzzles. BrainBoggled.com. - Have Professor Tangent
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Have fun with games, Tangent, puzzles, brainteasers and humor as you learn about logic and analysis. Professor Tangent. - A Gray Watson's Brain Teasers and Riddles
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A collection of brain teasers and riddles with a guess button. Gray Watson's Brain Teasers and Riddles. - Riddles, Puzzle Contest Center
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Riddles, Contest Center, brainteasers, cryptograms, anagrams, and logic puzzles. Compete in eight new contests monthly. Puzzle Contest Center. - A Had To Play On
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A community based site with competitions, Play On, challenges, awards, a help centre, forums and games. Had To Play On. - Collection Zuzzle Puzzles
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Collection of puzzles including riddles, Puzzles, logic puzzles and sequential puzzles. Zuzzle Puzzles. - Challenge iRIDDLER
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Challenge your mind with free online riddles/puzzles, iRIDDLER, logic games, brain teasers and view optical illusions. iRIDDLER. - Collection Say What You See!
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Collection of visual brain teasers which can be solved by saying what you see. Say What You See!. - An Brain Juice
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An assortment of entertaining logic puzzles with solutions and indicated levels of difficulties. Brain Juice. - Puzzles Cryptographs
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Puzzles featuring a portrait of a famous person and an encrypted quotation of its source or subject. Cryptographs. - Browser Cryptogram game
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Browser based solver. game. [Requires Flash 6] Cryptogram game. - Celebrates Mathpuzzle.com
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Celebrates math puzzles and mathematical recreations. Mathpuzzle.com. - A Wu's Riddles
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A collection of riddles, Riddles, puzzles, and technical interview questions, with a discussion forum. Wu's Riddles. - Some Leisure Ideas: Puzzles
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Some mathematical puzzles with answers and/or a hint. Leisure Ideas: Puzzles. - Answers TechInterview
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Answers to technical interview questions, TechInterview, programming problems, and brain teasers. TechInterview. - Online Japanese Puzzles
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Online flash game with black and white puzzles. Japanese Puzzles. - Creator Conceptis Puzzles
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Creator and supplier of picture-forming logic puzzles. Puzzles. Contains online games and those for sale from Japan. Conceptis Puzzles. - Amazing Optical Illusions
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Amazing Pictures and Effects Optical Illusions. - Optical Eyetricks.com
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Optical illusions, Eyetricks.com, 3D stereograms and anaglyphs, fractals and brain teasers Eyetricks.com. - Portal GameSpot: Puzzle Games
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Portal to Gamespot puzzle reviews, Puzzle Games, downloads, pictures, and links. GameSpot: Puzzle Games. - Contests Puzzletome
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Contests of varying difficulty and types. Puzzletome. Also has tutorials with worked examples and practice games. [Registration required] Puzzletome. - Challenging The Ultimate Puzzle Site
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Challenging puzzles and riddles and interactive quizzes and tests. The Ultimate Puzzle Site. - Alexa: Brain Teasers Puzzles
alexa:/topsites/category/Top/Games/Puzzles/Brain_Teasers
Alexa Directory Top Sites: Brain Teasers Puzzles - DMOZ: Brain Teasers Puzzles
dmoz:/Games/Puzzles/Brain_Teasers
dmoz.org Directory: Brain Teasers Puzzles