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How to solve a Rubik's cube in five seconds

imagetheilr, CC BY-SA

This week, 14-year-old Lucas Etter set a new world record for solving the classic Rubik’s cube in Clarksville, Maryland, in the US, solving the scrambled cube in an astonishing 4.904 seconds.

The maximum number of face turns needed to solve the classic Rubik’s cube, one that is segmented into squares laid out 3x3 on each...

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