Enigma 1553: Squares from squares
7 March 2012
Posted by on
From New Scientist #2716, 11th July 2009 [link]
Your task is to place a digit in each of these 16 squares (above).
When you have finished, the grid should have the following properties:
• no digit occurs more than once in any row
• the sum of the four digits in each row is the same
• the sum of the four digits in each column is the same
• each row should form a different four-figure perfect square
Find the four perfect squares, in increasing order.