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.
- 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.
- An Planetarium www
An on-line puzzle story in twelve weekly installments. Planetarium.
- 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.
- Offers Brain Teaser World www
Offers riddles, Teaser World, puzzles, optical illusions, and magic tricks. Brain Teaser World.
- Easy, Abnorm's Conundrums www
Easy, Conundrums, medium and difficult brain teasers without answers. Abnorm's Conundrums.
- Challenge iRIDDLER www
Challenge your mind with free online riddles/puzzles, iRIDDLER, logic games, brain teasers and view optical illusions. iRIDDLER.
- 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.
- 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.
- Word Word Juxtapoz www
Word puzzles, Juxtapoz, riddles, rebuses, brain teasers, mazes, cliparts and pictures. Word Juxtapoz.
- A Bill's Brain Teasers www
A collection of visual and linguistic riddles. Bill's Brain Teasers.
- 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.
- A Pzzls www
A collection of logic puzzles, Pzzls, riddles and brain teasers. Pzzls.
- Collection Zuzzle Puzzles www
Collection of puzzles including riddles, Puzzles, logic puzzles and sequential puzzles. Zuzzle Puzzles.
- A BrainBoggled.com www
A collection of math, BrainBoggled.com, logic, and word puzzles. BrainBoggled.com.
- Puzzles A Puzzlemakers Site www
Puzzles of all descriptions. A Puzzlemakers Site.
- Brain Brain Teasers www
Brain teasers, Teasers, riddles, logic puzzles and problems, paradoxes, optical illusions, IQ tests and logical games. Brain Teasers.
- Collection All-Star Puzzles: Logic Problems www
Collection of logic problems to solve. Puzzles: Logic Problems. Printable. All-Star Puzzles: Logic Problems.
- Weekly Eyetricks: Brain Teasers www
Weekly puzzles and archives. Eyetricks: Brain Teasers.
- A BrainBall www
A daily brain puzzle with 10 different tasks and a variety of statistics on your performance. BrainBall.
- Collection BrainVista www
Collection of solved and unsolved brain teasers. BrainVista.
- 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.
- Riddles, Just Riddles and More www
Riddles, Riddles and More, illusions, puzzles, and brain teasers. Just Riddles and More.
- An Rec.puzzles Archive www
An archive of many popular puzzles from the rec. Archive.puzzles newsgroup. Rec.puzzles Archive.
- An Brain Juice www
An assortment of entertaining logic puzzles with solutions and indicated levels of difficulties. Brain Juice.
- Paradoxes, Curiouser.co.uk www
Paradoxes, Curiouser.co.uk, puzzles, games, optical illusions, poetry, curious facts, and quotations. Curiouser.co.uk.
- 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.
- It's Confusion www
It's a challenge to reach the end of this puzzle maze. Confusion.
- 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.
- Brain BrainBashers www
Brain teasers, BrainBashers, puzzles, riddles, games and optical illusions. BrainBashers.
- Riddles, Puzzle Contest Center www
Riddles, Contest Center, brainteasers, cryptograms, anagrams, and logic puzzles. Compete in eight new contests monthly. Puzzle Contest Center.
- Have Professor Tangent www
Have fun with games, Tangent, puzzles, brainteasers and humor as you learn about logic and analysis. Professor Tangent.
- Collection AVAV www
Collection of optical illusions, AVAV, brain teasers and riddles. AVAV.
- Over PedagoNet Brainers www
Over 60 brain teasers to enhance your mind. PedagoNet Brainers.
- Collection Say What You See! www
Collection of visual brain teasers which can be solved by saying what you see. Say What You See!.
- 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.
- Recreational Archimedes' Laboratory www
Recreational mathematics including puzzles to make and solve, Laboratory, tessellations, geometric puzzles, optical illusions, and curiosities. Archimedes' Laboratory.
- Has Letter Frequency and Word Frequency in the English Language www
Has the statistics for various types of writings(Press, Frequency and Word Frequency in the English Language, Religious, Scientific), position in the word(first, second, third, last), and digraphs. Letter Frequency and Word Frequency in the English Language.
- Browser Cryptogram game www
Browser based solver. game. [Requires Flash 6] Cryptogram game.
- Object Alien Tiles www
Object of puzzle is to try to get color pieces to create certain patterns in cube. Alien Tiles.
- Original Brain Teasers by QBrute www
Original brain teasers with solutions. Brain Teasers by QBrute.
- Use Quick Logic Puzzles www
Use the clues provided to deduce the correct sequence of numbers in the hidden code. Quick Logic Puzzles.
- Some Leisure Ideas: Puzzles www
Some mathematical puzzles with answers and/or a hint. Leisure Ideas: Puzzles.
- Freeware Griddlers Solver with Animator www
Freeware application with auto-solver and ingenious animations. Solver with Animator. Includes article about solving by computers. [Windows] Griddlers Solver with Animator.
- Article Solving Paint-by-Numbers Puzzles with Integer Programming www
Article and instructions on solving puzzles. Solving Paint-by-Numbers Puzzles with Integer Programming.
- A Optillusions www
A collection of riddles and optical illusions of many different forms with thumbnail browsing. Optillusions.
- Offers Eye Magic: Optical Illusions www
Offers a number of optical illusions for viewing, Magic: Optical Illusions, as well as explanations on how they work. Eye Magic: Optical Illusions.
- Portal GameSpot: Puzzle Games www
Portal to Gamespot puzzle reviews, Puzzle Games, downloads, pictures, and links. GameSpot: Puzzle Games.
- Crosswords, Puzzle Choice www
Crosswords, Choice, wordsearches, cryptograms, quizzes, wordplay and other interactive and printable puzzles and games. Puzzle Choice.
- Shareware Variety Games www
Shareware software programs available to create custom crossword and word searches. Variety Games.
- Alexa: Brain Teasers Puzzles
Alexa Directory Top Sites: Brain Teasers Puzzles
- DMOZ: Brain Teasers Puzzles
dmoz.org Directory: Brain Teasers Puzzles