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 Squaring a Square Grid (Posted on 2009-10-10)
Place 16 nonzero base ten digits in the cells of a 4x4 square grid, with each digit occurring in a cell exactly once. The digits can be considered as forming eight 4-digit numbers, read left to right and top to bottom, each of which is a perfect square. Since there are more than nine cells, there will be an obvious repetition of digits.

 No Solution Yet Submitted by K Sengupta No Rating

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 re: All nonzero? | Comment 2 of 4 |
(In reply to All nonzero? by Jim Keneipp)

Are you taking "repetition of digits" to mean within a particular square number? I'm sure the "obvious" means that there's repetition among the 4x4 = 16 digits of the whole grid.

Or are you assuming that none of the 4-digit squares can repeat?

Edited on October 10, 2009, 3:26 pm
 Posted by Charlie on 2009-10-10 15:01:39

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