Enigma 1316: Clueless
17 June 2014
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From New Scientist #2474, 20th November 2004
I gave a copy each to my niece and nephew of the following grid and instructions to see what different answers they might produce.
“Follow these instructions, in each case writing a number, larger than 10, across or down, within the grid, and with one digit in each box:
A. Starting at a box number which is a square, write a square.
B. Starting at a box number which is a cube, write a cube.
C. Starting at a box number which is a prime, write a prime whose digits add up to an even number.
D. Starting at a box number which is even, write an even number.
Your answers should fill the grid, with no two answers overlapping.”
Unfortunately, one of the copies had instruction D completely missing. Each child gave me a 3-by-3 grid which was correct for the copy they had been given. By coincidence they gave me identical grids.
What was their completed grid?
Enigma 1772 is also called “Clueless”.