At Rubik's cube world contest, solving the puzzle seems easy

Published Jul 17, 2017, 8:40 pm IST
It's challenging for some and maddening for others, but the popularity of the Rubik's cube remains more than 40 years ...
It's challenging for some and maddening for others, but the popularity of the Rubik's cube remains more than 40 years since its invention.

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