**From New Scientist #2475, 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”.

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