Boy smashes Rubik's cube record.
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Boy smashes Rubik's Cube world record

24 November 2015 Last updated at 11:31 GMT

A 14-year-old in the US has solved a Rubik's Cube in under five seconds, smashing the world record.

Lucas Etter completed the puzzle in 4.9 seconds, beating the previous record by 0.35 seconds.

It's the first time anyone's been able to solve a Rubik's Cube in under five seconds.

Take a look Lucas completing his amazing record.