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The "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 or retracing any lines.
In 1970, the phrase think outside the dots appears without mentioning the nine dots puzzle. [13] [7] Finally, in 1971, the specific phrase think outside the box is attested, again appearing together with the nine dots puzzle. [14] [15] In 1976, the phrase is used in England [16] and 1978 in the USA, [17] both without mentioning the nine dots ...
Download QR code; In other projects ... Three-line solution to the nine dots puzzle when the line or dots have finite width. ... distribute and/or modify this ...
The Nine Dots Puzzle is the first known puzzle game where the player has to connect dots. But in this variant the goal is not to draw a picture, but to solve a logic puzzle . The emergence of connect the dots games in the printed press takes place in the early 20th century.
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I suggest that the "Nine dots puzzle" section (and its subsections about solving in three dimensions, and a prize that was named after it) be split into a separate article at Nine dots puzzle. It's a classic puzzle with a strong and sourceable pedigree beyond its connection to the 1970s management jargon, which it pre-dates by some sixty years.
Download QR code; In other projects ... Solution of the Nine Dots puzzle: Date: 25 July 2009: Source: ... GNU Free Documentation License, version 1.2 or later ...
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