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Please draw four connected straight lines so that all dots are connected, without lifting the pen. Please draw four connected straight lines so that all dots are connected, without lifting the pen. The Nine-Dot Problem. Based on Scheerer (1963):
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Please draw four connected straight lines so that all dots are connected, without lifting the pen Please draw four connected straight lines so that all dots are connected, without lifting the pen The Nine-Dot Problem Based on Scheerer (1963): Scheerer‘s nine-dot problem reveals functional fixedness in problem solving. Its solution is often related to the feeling of insight. Click for a description of the problem. Contributor © POSbase 2003