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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. George Boolos - Wikipedia

    en.wikipedia.org/wiki/George_Boolos

    Without hesitating Boolos replied, "It's part of it". An expert on puzzles of all kinds, in 1993 Boolos reached the London Regional Final of The Times crossword competition. His score was one of the highest ever recorded by an American. He wrote a paper on "The Hardest Logic Puzzle Ever"—one of many puzzles created by Raymond Smullyan.

  4. List of impossible puzzles - Wikipedia

    en.wikipedia.org/wiki/List_of_impossible_puzzles

    This is a list of puzzles that cannot be solved. 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.

  5. 12 Logic Puzzles That Will Test Your Smarts - AOL

    www.aol.com/12-logic-puzzles-test-smarts...

    Like some of the hardest math puzzles and math riddles, these puzzles can get very complex. If you look for them online, you’ll find lots of examples of logic puzzles that come with grids to ...

  6. Raymond Smullyan - Wikipedia

    en.wikipedia.org/wiki/Raymond_Smullyan

    The puzzle known as "the hardest logic puzzle ever" is based on these characters and themes. In his Transylvania puzzles, half of the inhabitants are insane, and believe only false things, whereas the other half are sane and believe only true things. In addition, humans always tell the truth, and vampires always lie. For example, an insane ...

  7. Talk:The Hardest Logic Puzzle Ever - Wikipedia

    en.wikipedia.org/wiki/Talk:The_Hardest_Logic...

    There is Boolos' puzzle, i.e. The Hardest Logic Puzzle Ever, which is inspired by (or Boolos' re-working of or Boolos' take on or Boolos' memory of) certain Smullyan puzzles. I don't know how else to convey this. It is getting silly. The Hardest Logic Puzzle Ever is not equal to some puzzle x such that x was authored by Smullyan.

  8. 10 Hard Math Problems That Even the Smartest People in the ...

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

    For more puzzles and brainteasers, check out Puzzmo. More from Popular Mechanics : To Create His Geometric Artwork, M.C. Escher Had to Learn Math the Hard Way

  9. Knights and Knaves - Wikipedia

    en.wikipedia.org/wiki/Knights_and_Knaves

    Goodman reports the puzzle came back to him from various directions, including a 1936 Warsaw Logicians' meeting via Carnap; some echo versions were corrupted by joining B 's two utterances into a single one, which make the puzzle unsolvable. Some years later, Goodman heard about the fork in the road variant; having scruples about ...