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  2. List of impossible puzzles - Wikipedia

    en.wikipedia.org/wiki/List_of_impossible_puzzles

    Coloring the edges of the Petersen graph with three colors. [5] Seven Bridges of Königsberg – Walk through a city while crossing each of seven bridges exactly once. [6] 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]

  3. 110 Riddles for Adults That Are Sure to Stump You - AOL

    www.aol.com/lifestyle/found-most-impossible...

    Q: What do the numbers 11, 69 and 88 all have in common? A: They all read the same way when placed upside down. Q: If 2 is company and 3 is a crowd, what are 4 and 5? A: 9. Q: I add 5 to 9 and get 2.

  4. 25 Printable Brain Teasers You Can Print for Free - AOL

    www.aol.com/25-printable-brain-teasers-print...

    How many of these brain busters can you solve? The post 25 Printable Brain Teasers You Can Print for Free appeared first on Reader's Digest.

  5. Category:Logic puzzles - Wikipedia

    en.wikipedia.org/wiki/Category:Logic_puzzles

    Print/export Download as PDF; Printable version; In other projects ... Pages in category "Logic puzzles" The following 87 pages are in this category, out of 87 total.

  6. Bag (puzzle) - Wikipedia

    en.wikipedia.org/wiki/Bag_(puzzle)

    Bag is played on a rectangular grid, usually of dashed lines, in which numbers appear in some of the cells. The object is to draw a single, continuous loop along the lines of the grid that contains all the numbers on the grid. Each number indicates the total number of cells visible in any orthogonal directi

  7. 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.

  8. These 3D Brain Teaser Puzzles Require Logic and ... - AOL

    www.aol.com/lifestyle/3d-brain-teaser-puzzles...

    There are also a few pages of 3D puzzles, which involve stacking play pieces on top of each other. Educational Insights claims Kanoodle expands spatial reasoning skills and enhances critical thinking.

  9. Rush Hour (puzzle) - Wikipedia

    en.wikipedia.org/wiki/Rush_Hour_(puzzle)

    The goal of the game is to get only the red car out through the exit of the board by moving the other vehicles out of its way. However, the cars and trucks (set up before play, according to a puzzle card) obstruct the path of both the red car and each other, which makes the puzzle even more difficult.

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