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  2. 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. Kookrooster maken 23; 15 Puzzle – Slide fifteen numbered tiles into numerical order. It is impossible to solve in half of the starting positions.

  3. Missing dollar riddle - Wikipedia

    en.wikipedia.org/wiki/Missing_dollar_riddle

    There seems to be a discrepancy, as there cannot be two answers ($29 and $30) to the math problem. On the one hand it is true that the $25 in the register, the $3 returned to the guests, and the $2 kept by the bellhop add up to $30, but on the other hand, the $27 paid by the guests and the $2 kept by the bellhop add up to only $29.

  4. 14 Visual Brain Teasers and Puzzles That Will Leave You ... - AOL

    www.aol.com/lifestyle/14-visual-brain-teasers...

    In the 1950s, humor writer Roger Price became famous for creating a new type of visual puzzle called “Droodles.” These Droodles were cartoon-y line drawings of abstract images, and readers ...

  5. List of puzzle topics - Wikipedia

    en.wikipedia.org/wiki/List_of_puzzle_topics

    Brain teaser; Chess puzzle. Chess problem; Computer puzzle game; Cross Sums; Crossword puzzle; Cryptic crossword; Cryptogram; Maze. Back from the klondike; Ball-in-a-maze puzzle; Mechanical puzzle. Ball-in-a-maze puzzle; Burr puzzle; Word puzzle. Acrostic; Daughter in the box; Disentanglement puzzle; Edge-matching puzzle; Egg of Columbus; Eight ...

  6. Math Blaster Mystery: The Great Brain Robbery - Wikipedia

    en.wikipedia.org/wiki/Math_Blaster_Mystery:_The...

    The player has to navigate Rave around Dr. Dabble's mansion solving math puzzles and collecting key items to progress, until Dr. Dabble's lab is reached. The math puzzles consist of multiple choice questions, formulas, arithmetics, estimates, ratios, negative numbers, BODMAS, decimals and algebraic equations. Every math puzzle activity has ...

  7. Recreational mathematics - Wikipedia

    en.wikipedia.org/wiki/Recreational_mathematics

    Mathematical puzzles require mathematics in order to solve them. They have specific rules, as do multiplayer games, but mathematical puzzles do not usually involve competition between two or more players. Instead, in order to solve such a puzzle, the solver must find a solution that satisfies the given conditions.