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  2. 120 Fascinating Unanswerable Questions That Will Astound You

    www.aol.com/lifestyle/120-fascinating...

    They're brain teasers, paradoxes, and riddles without solutions. Philosophers have pondered them for centuries, kids ask them to stump their parents. Philosophers have pondered them for centuries ...

  3. The Viral '30 Cows and 28 Chickens' Riddle Is Trickier Than ...

    www.aol.com/viral-30-cows-28-chickens-110600518.html

    From tricky brain teasers to classic word games, many of us love a good challenge. So, it's no surprise that a viral riddle—known as the "30 Cows and 28 Chickens" riddle—is going around right ...

  4. 15 Viral Riddles and Brain Teasers That Will Leave You ... - AOL

    www.aol.com/lifestyle/15-viral-riddles-brain...

    The post 15 Viral Riddles and Brain Teasers That Will Leave You Stumped for Days appeared first on Reader's Digest. Take a stab at these brain busters (including some tricky viral Facebook riddles ...

  5. Best Brain Training Games: Riddles, Brain Teasers, Puzzles ...

    www.aol.com/lifestyle/75-brain-games-guaranteed...

    Exercise your brain and sharpen your mind (the fun way!) with these 13 types of brain training games. The post Best Brain Training Games: Riddles, Brain Teasers, Puzzles, and More appeared first ...

  6. Riddle - Wikipedia

    en.wikipedia.org/wiki/Riddle

    A riddle is a statement, question, or phrase having a double or veiled meaning, put forth as a puzzle to be solved. Riddles are of two types: enigmas, which are problems generally expressed in metaphorical or allegorical language that require ingenuity and careful thinking for their solution, and conundra, which are questions relying for their effects on punning in either the question or the ...

  7. Disentanglement puzzle - Wikipedia

    en.wikipedia.org/wiki/Disentanglement_puzzle

    One particularly difficult puzzle was designed by R. Boomhower in 1966 and has been modified into different designs (but topologically similar). Different versions include a paddle-shaped design, a vertical beam on a wood support, and two vertical beams on a wood support.