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Brain Teasers
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Categories
Cryptograms (21)
Mathematical (14)
Nonograms (6)
Optical Illusions (24)
Riddles (30)
Sudoku (82)
Web Pages
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  BrainBashers http://www.brainbashers.com/
Brain teasers, puzzles, riddles, games and optical illusions.
  A Game A Day http://www.agameaday.com
A puzzle site featuring a new puzzle format each weekday for each month. Puzzles are fun, educational, entertaining and are also printable.
  Puzzability http://www.puzzability.com/
Some real mind benders here.
  Thinks.com http://www.thinks.com/
Recreations for active minds including games, puzzles, math, words, images, books, software and web guide.
  Archimedes' Laboratory http://www.archimedes-lab.org
Recreational mathematics including puzzles to make and solve, tessellations, geometric puzzles, optical illusions, and curiosities.
  The Grey Labyrinth http://www.greylabyrinth.com/
A beautifully illustrated collection of puzzles, riddles, and paradoxes. Features a changing "unsolved puzzle" plus three years worth of previous puzzles.
  National Puzzlers' League http://www.puzzlers.org/
Crosswords and other word puzzles and games, samples; monthly puzzle magazine; 800,000 word searchable list.
  Braingle http://braingle.com
Includes a huge collection of user submitted and rated brain teasers and riddles. It also has a message board and some unique multi-player games.
  Rec.puzzles Archive http://rec-puzzles.org/
An archive of many popular puzzles from the rec.puzzles newsgroup.
  Bill's Brain Teasers http://www.billsgames.com/brain-teasers/
A collection of visual and linguistic riddles.
  Brain Teasers http://brainden.com/
Brain teasers, riddles, logic puzzles and problems, paradoxes, optical illusions, IQ tests and logical games.
  Eluzions http://eluzions.com/
Featuring all sorts of games, optical illusions, puzzles, trivia, mazes, and magic tricks. Suitable for all ages.
  Planetarium http://www.beholder.co.uk/planetarium
An on-line puzzle story in twelve weekly installments.
  Curiouser.co.uk http://www.curiouser.co.uk
Paradoxes, puzzles, games, optical illusions, poetry, curious facts, and quotations.
  Gray Watson's Brain Teasers and Riddles http://256.com/gray/teasers/
A collection of brain teasers and riddles with a guess button.
  http://www.pzzls.com http://www.pzzls.com
A collection of logic puzzles, riddles and brain teasers.
  Professor Tangent http://www.professortangent.org
Have fun with games, puzzles, brainteasers and humor as you learn about logic and analysis.
  Just Riddles and More http://www.justriddlesandmore.com
Riddles, illusions, puzzles, and brain teasers.
  A Puzzlemakers Site http://www.puzzlemakers.net
Puzzles of all descriptions.
  Word Juxtapoz http://www.wordjuxtapoz.com/
Word puzzles, riddles, rebuses, brain teasers, mazes, cliparts and pictures.
  iRIDDLER http://www.iriddler.com
Challenge your mind with free online riddles/puzzles, logic games, brain teasers and view optical illusions.
  Able2Know http://able2know.com/forums/viewforum.php?f=8
Message board of user submitted riddles and brain teasers.
  PedagoNet Brainers http://www.pedagonet.com/brain/brainers.html
Over 60 brain teasers to enhance your mind.
  Puzzle Contest Center http://www.contestcen.com/
Riddles, brainteasers, cryptograms, anagrams, and logic puzzles. Compete in eight new contests monthly.
  BrainBoggled.com http://www.brainboggled.com/
A collection of math, logic, and word puzzles.
  Brain Teaser World http://www.brainteaser-world.com/
Offers riddles, puzzles, optical illusions, and magic tricks.
  Brain Juice http://www.brainj.net/puzzleindex.php
An assortment of entertaining logic puzzles with solutions and indicated levels of difficulties.
  Zuzzle Puzzles http://www.zuzzle.com/
Collection of puzzles including riddles, logic puzzles and sequential puzzles.
  Confusion http://cnfsn.tripod.com/
It's a challenge to reach the end of this puzzle maze.
  The Logic Zone http://myweb.tiscali.co.uk/thelogiczone/
Collection of problems with answers, logic puzzles and cryptograms.
  http://www.askix.com/avav/ http://www.askix.com/avav/
Collection of optical illusions, brain teasers and riddles.
  Puzzles Without Rules http://puzzleswithoutrules.blogspot.com/
Free, updated, original abstract puzzles for advanced puzzle-solvers. Includes current unsolved puzzle and archive with hints and solutions.
  Had To Play On http://www.hadtoplayon.com
A community based site with competitions, challenges, awards, a help centre, forums and games.
  Abnorm's Conundrums http://www.angelfire.com/oh/abnorm/
Easy, medium and difficult brain teasers without answers.
  Roh'El's Riddles http://users.telenet.be/jo.roel/Riddles/index.html
Offers brainteasers rated by difficulty and category.
  BrainBall http://brainball.playwithyourmind.com/
A daily brain puzzle with 10 different tasks and a variety of statistics on your performance.
  Thinking Game Forums http://www.infordigital.com/
Chat and discussion about online thinking games.
  All-Star Puzzles: Logic Problems http://www.allstarpuzzles.com/logic/
Collection of logic problems to solve. Printable.
  Say What You See! http://www.eyetricks.com/swys/swys0101.htm
Collection of visual brain teasers which can be solved by saying what you see.
  Eyetricks: Brain Teasers http://www.eyetricks.com/brainteasers/
Weekly puzzles and archives.
  BrainVista http://www.brainvista.com
Collection of solved and unsolved brain teasers.
  The Amazing Art Site http://members.lycos.nl/amazingart/
Huge collection of optical illusions, hidden imagery, ambiguous art and upside downs.

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