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  2. Logic puzzle - Wikipedia

    en.wikipedia.org/wiki/Logic_puzzle

    Another form of logic puzzle, popular among puzzle enthusiasts and available in magazines dedicated to the subject, is a format in which the set-up to a scenario is given, as well as the object (for example, determine who brought what dog to a dog show, and what breed each dog was), certain clues are given ("neither Misty nor Rex is the German Shepherd"), and then the reader fills out a matrix ...

  3. List of undecidable problems - Wikipedia

    en.wikipedia.org/wiki/List_of_undecidable_problems

    In computability theory, an undecidable problem is a decision problem for which an effective method (algorithm) to derive the correct answer does not exist. More formally, an undecidable problem is a problem whose language is not a recursive set ; see the article Decidable language .

  4. List of impossible puzzles - Wikipedia

    en.wikipedia.org/wiki/List_of_impossible_puzzles

    Squaring the circle, the impossible problem of constructing a square with the same area as a given circle, using only a compass and straightedge. [7] Three cups problem – Turn three cups right-side up after starting with one wrong and turning two at a time. [8]

  5. List of Martin Gardner Mathematical Games columns - Wikipedia

    en.wikipedia.org/wiki/List_of_Martin_Gardner...

    Dr. Matrix gives his explanation of why Mr. Nixon was elected President 1969 Feb: Boolean algebra, Venn diagrams and the propositional calculus: 1969 Mar: The multiple fascinations of the Fibonacci sequence: 1969 Apr: An octet of problems that emphasize gamesmanship, logic and probability 1969 May: The rambling random walk and its gambling ...

  6. List of PSPACE-complete problems - Wikipedia

    en.wikipedia.org/wiki/List_of_PSPACE-complete...

    Word problem for linear bounded automata [25] Word problem for quasi-realtime automata [26] Emptiness problem for a nondeterministic two-way finite state automaton [27] [28] Equivalence problem for nondeterministic finite automata [29] [30] Word problem and emptiness problem for non-erasing stack automata [31]

  7. Games.com's Top 5 Free Online Word Games - AOL

    www.aol.com/news/2014-05-31-games-coms-top-5...

    Games.com is the best place to see where you rank amongst the quickest spellers, intuitive thinkers, and toughest opponents online. We've narrowed it down to top five word games that are as Games ...

  8. List of logic symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_logic_symbols

    In logic, a set of symbols is commonly used to express logical representation. The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics .

  9. Play Just Words Online for Free - AOL.com

    www.aol.com/games/play/masque/just-words

    If you love Scrabble, you'll love the wonderful word game fun of Just Words. Play Just Words free online! ... Games. Health. Home & Garden. News. Shopping. Main Menu. Health. Health. Fitness ...

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