Brain Teasers - Musharof Chy
Just Riddles and More
Riddles, illusions, puzzles, and brain teasers.
Archimedes' Laboratory
Recreational mathematics including puzzles to make and solve, tessellations, geometric puzzles, opt...
Puzzle Contest Center
Riddles, brainteasers, cryptograms, anagrams, and logic puzzles. Compete in eight new contests mont...
The Grey Labyrinth
A beautifully illustrated collection of puzzles, riddles, and paradoxes. Features a changing "unsol...
National Puzzlers' League
Crosswords and other word puzzles and games, samples; monthly puzzle magazine; 800,000 word searcha...
Braingle
Includes a huge collection of user submitted and rated brain teasers and riddles. It also has a mes...
Planetarium
An on-line puzzle story in twelve weekly installments.
Abnorm's Conundrums
Easy, medium and difficult brain teasers without answers.
Bill's Brain Teasers
A collection of visual and linguistic riddles.
iRIDDLER
Challenge your mind with free online riddles/puzzles, logic games, brain teasers and view optical i...