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.
- Collection AVAV www
Collection of optical illusions, AVAV, brain teasers and riddles. AVAV.
- Offers Brain Teaser World www
Offers riddles, Teaser World, puzzles, optical illusions, and magic tricks. Brain Teaser World.
- A Pzzls www
A collection of logic puzzles, Pzzls, riddles and brain teasers. Pzzls.
- Brain BrainBashers www
Brain teasers, BrainBashers, puzzles, riddles, games and optical illusions. BrainBashers.
- Huge The Amazing Art Site www
Huge collection of optical illusions, Amazing Art Site, hidden imagery, ambiguous art and upside downs. The Amazing Art Site.
- Weekly Eyetricks: Brain Teasers www
Weekly puzzles and archives. Eyetricks: Brain Teasers.
- Recreations Thinks.com www
Recreations for active minds including games, Thinks.com, puzzles, math, words, images, books, software and web guide. Thinks.com.
- Some Puzzability www
Some real mind benders here. Puzzability.
- An Rec.puzzles Archive www
An archive of many popular puzzles from the rec. Archive.puzzles newsgroup. Rec.puzzles Archive.
- Collection All-Star Puzzles: Logic Problems www
Collection of logic problems to solve. Puzzles: Logic Problems. Printable. All-Star Puzzles: Logic Problems.
- Free, Puzzles Without Rules www
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 www
A collection of visual and linguistic riddles. Bill's Brain Teasers.
- Collection BrainVista www
Collection of solved and unsolved brain teasers. BrainVista.
- Word Word Juxtapoz www
Word puzzles, Juxtapoz, riddles, rebuses, brain teasers, mazes, cliparts and pictures. Word Juxtapoz.
- Crosswords National Puzzlers' League www
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 www
Easy, Conundrums, medium and difficult brain teasers without answers. Abnorm's Conundrums.
- A The Grey Labyrinth www
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 www
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 www
Paradoxes, Curiouser.co.uk, puzzles, games, optical illusions, poetry, curious facts, and quotations. Curiouser.co.uk.
- Over PedagoNet Brainers www
Over 60 brain teasers to enhance your mind. PedagoNet Brainers.
- Brain Brain Teasers www
Brain teasers, Teasers, riddles, logic puzzles and problems, paradoxes, optical illusions, IQ tests and logical games. Brain Teasers.
- A A Game A Day www
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 www
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 www
Recreational mathematics including puzzles to make and solve, Laboratory, tessellations, geometric puzzles, optical illusions, and curiosities. Archimedes' Laboratory.
- A BrainBall www
A daily brain puzzle with 10 different tasks and a variety of statistics on your performance. BrainBall.
- Riddles, Just Riddles and More www
Riddles, Riddles and More, illusions, puzzles, and brain teasers. Just Riddles and More.
- An Planetarium www
An on-line puzzle story in twelve weekly installments. Planetarium.
- Puzzles A Puzzlemakers Site www
Puzzles of all descriptions. A Puzzlemakers Site.
- It's Confusion www
It's a challenge to reach the end of this puzzle maze. Confusion.
- A BrainBoggled.com www
A collection of math, BrainBoggled.com, logic, and word puzzles. BrainBoggled.com.
- Have Professor Tangent www
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 www
A collection of brain teasers and riddles with a guess button. Gray Watson's Brain Teasers and Riddles.
- Riddles, Puzzle Contest Center www
Riddles, Contest Center, brainteasers, cryptograms, anagrams, and logic puzzles. Compete in eight new contests monthly. Puzzle Contest Center.
- A Had To Play On www
A community based site with competitions, Play On, challenges, awards, a help centre, forums and games. Had To Play On.
- Collection Zuzzle Puzzles www
Collection of puzzles including riddles, Puzzles, logic puzzles and sequential puzzles. Zuzzle Puzzles.
- Challenge iRIDDLER www
Challenge your mind with free online riddles/puzzles, iRIDDLER, logic games, brain teasers and view optical illusions. iRIDDLER.
- Collection Say What You See! www
Collection of visual brain teasers which can be solved by saying what you see. Say What You See!.
- An Brain Juice www
An assortment of entertaining logic puzzles with solutions and indicated levels of difficulties. Brain Juice.
- Puzzles Cryptographs www
Puzzles featuring a portrait of a famous person and an encrypted quotation of its source or subject. Cryptographs.
- Browser Cryptogram game www
Browser based solver. game. [Requires Flash 6] Cryptogram game.
- Celebrates Mathpuzzle.com www
Celebrates math puzzles and mathematical recreations. Mathpuzzle.com.
- A Wu's Riddles www
A collection of riddles, Riddles, puzzles, and technical interview questions, with a discussion forum. Wu's Riddles.
- Some Leisure Ideas: Puzzles www
Some mathematical puzzles with answers and/or a hint. Leisure Ideas: Puzzles.
- Answers TechInterview www
Answers to technical interview questions, TechInterview, programming problems, and brain teasers. TechInterview.
- Online Japanese Puzzles www
Online flash game with black and white puzzles. Japanese Puzzles.
- Creator Conceptis Puzzles www
Creator and supplier of picture-forming logic puzzles. Puzzles. Contains online games and those for sale from Japan. Conceptis Puzzles.
- Amazing Optical Illusions www
Amazing Pictures and Effects Optical Illusions.
- Optical Eyetricks.com www
Optical illusions, Eyetricks.com, 3D stereograms and anaglyphs, fractals and brain teasers Eyetricks.com.
- Portal GameSpot: Puzzle Games www
Portal to Gamespot puzzle reviews, Puzzle Games, downloads, pictures, and links. GameSpot: Puzzle Games.
- Contests Puzzletome www
Contests of varying difficulty and types. Puzzletome. Also has tutorials with worked examples and practice games. [Registration required] Puzzletome.
- Challenging The Ultimate Puzzle Site www
Challenging puzzles and riddles and interactive quizzes and tests. The Ultimate Puzzle Site.
- Alexa: Brain Teasers Puzzles
Alexa Directory Top Sites: Brain Teasers Puzzles
- DMOZ: Brain Teasers Puzzles
dmoz.org Directory: Brain Teasers Puzzles