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  2. Nine dots puzzle - Wikipedia

    en.wikipedia.org/wiki/Nine_dots_puzzle

    The puzzle asks to link all nine dots using four straight lines or fewer, without lifting the pen. The nine dots puzzle is a mathematical puzzle whose task is to connect nine squarely arranged points with a pen by four (or fewer) straight lines without lifting the pen. The puzzle has appeared under various other names over the years.

  3. Thinking outside the box - Wikipedia

    en.wikipedia.org/wiki/Thinking_outside_the_box

    The "nine dots" puzzle (left) has the goal of linking all 9 dots using four straight lines or less, without lifting the pen. Its solution (right) is to draw those lines "outside the box". Since at least 1954, the nine dots puzzle has been used as a metaphor of the type "think beyond the boundary".

  4. Eureka effect - Wikipedia

    en.wikipedia.org/wiki/Eureka_effect

    The Nine Dot Problem with solution. Most individuals fail to draw lines beyond the dots that compose the square, and are unable to solve this puzzle. The Nine Dot Problem is a classic spatial problem used by psychologists to study insight. The problem consists of a 3 × 3 square created by 9 black dots.

  5. Nonogram - Wikipedia

    en.wikipedia.org/wiki/Nonogram

    Nonograms, also known as Hanjie, Paint by Numbers, Picross, Griddlers, and Pic-a-Pix, are picture logic puzzles in which cells in a grid must be colored or left blank according to numbers at the edges of the grid to reveal a hidden picture. In this puzzle, the numbers are a form of discrete tomography that measures how many unbroken lines of ...

  6. Nine dots problem - Wikipedia

    en.wikipedia.org/?title=Nine_dots_problem&...

    Nine dots puzzle; Retrieved from "https: ... Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may apply.

  7. Connect the dots - Wikipedia

    en.wikipedia.org/wiki/Connect_the_dots

    A partially solved puzzle. Connect the dots (also known as connect-the-dots, dot to dot, join the dots or follow the dots) is a form of puzzle containing a sequence of numbered dots. [1] When a line is drawn connecting the dots the outline of an object is revealed. The puzzles frequently contain simple line art to enhance the image created or ...