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Square Squares Settlement (Posted on 2014-07-30) Difficulty: 3 of 5
What is the smallest number of straight lines with which you can make precisely 225 squares?

For example with five vertical and six horizontal lines, evenly spaced, 40 squares are formed: twenty 1x1, twelve 2x2, six 3x3 and two 4x4.
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No Solution Yet Submitted by K Sengupta    
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  Subject Author Date
SolutionSolutionBrian Smith2016-06-17 13:34:34
SolutionUpper bound?tomarken2014-07-31 10:03:41
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