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The Guardian - UK
The Guardian - UK
Science
Alex Bellos

Can you solve it? The simple question almost everyone gets wrong

Stenciletto

Today’s puzzles are an intelligence test for children invented a century ago by an American psychologist, Grace Arthur.

You will be presented with a patterned square. The challenge is to work out how to create this square by placing some of the available stencils and coloured blocks on top of each other.

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