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  2. The Hardest Logic Puzzle Ever - Wikipedia

    en.wikipedia.org/wiki/The_Hardest_Logic_Puzzle_Ever

    The Hardest Logic Puzzle Ever is a logic puzzle so called by American philosopher and logician George Boolos and published in The Harvard Review of Philosophy in 1996. [ 1 ] [ 2 ] Boolos' article includes multiple ways of solving the problem.

  3. Knights and Knaves - Wikipedia

    en.wikipedia.org/wiki/Knights_and_Knaves

    A further complication is that the inhabitants may answer yes–no questions in their own language, and the visitor knows that "bal" and "da" mean "yes" and "no" but does not know which is which. These types of puzzles were a major inspiration for what has become known as " the hardest logic puzzle ever ".

  4. List of impossible puzzles - Wikipedia

    en.wikipedia.org/wiki/List_of_impossible_puzzles

    An impossible puzzle is a puzzle that cannot be resolved, either due to lack of sufficient information, or any number of logical impossibilities. 15 Puzzle – Slide fifteen numbered tiles into numerical order. It is impossible to solve in half of the starting positions. [1]

  5. 10 Hard Math Problems That Even the Smartest People in the ...

    www.aol.com/10-hard-math-problems-even-150000090...

    Goldbach’s Conjecture. One of the greatest unsolved mysteries in math is also very easy to write. Goldbach’s Conjecture is, “Every even number (greater than two) is the sum of two primes ...

  6. Notpron - Wikipedia

    en.wikipedia.org/wiki/Notpron

    It has been named as "the hardest riddle available on the internet". [3] Regarded as one of the first of the online puzzle game genre, Notpron follows a standard puzzle game layout, where the player is presented with a webpage containing a riddle and must find the answer to the riddle in order to proceed to the next webpage.

  7. How to answer questions about your body this holiday season ...

    www.aol.com/answer-questions-body-holiday-season...

    It's the most wonderful—and stressful—time of the year. While the holiday season can be joyful, gatherings with family, friends, and colleagues inevitably come with some awkward encounters.

  8. Here Are the Best Ways to Find Free or Cheap Massages - AOL

    www.aol.com/best-ways-free-cheap-massages...

    The only thing better than a massage is a free massage — or at least one that’s on sale. The national average cost of a massage is $100 per session, but we can do way better than that. And yes ...

  9. The Impossible Quiz - Wikipedia

    en.wikipedia.org/wiki/The_Impossible_Quiz

    In the mobile versions, a feature called a "Moron Mark" appears every 20 questions which allows players to reset from a particular question if all lives are lost. [2] The quiz was also noted for its irreverent humor. [1] [6] Some questions contained references to video games and popular culture, [3] [7] while other questions consisted of ...