Sunday Times Teaser 2734 – Interlocking Squares
by Andrew Skidmore
Published: 14 February 2015 (link)
Place all of the digits 0 to 9 in the grid so that, reading across or down in crossword fashion, one can see a two-figure square, a three-figure square, and two four-figure squares.
What (in increasing order) are the four squares?
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