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Rotation, Rotation, Rotation
A question: what attribute was shared by the first crosswords published in The Times and The Telegraph, but not the first Guardian puzzle? The answer is 180° rotational symmetry. It’s something that we take...
A question: what attribute was shared by the first crosswords published in The Times and The Telegraph, but not the first Guardian puzzle? The answer is 180° rotational symmetry. It’s something that we take...
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