IT WAS hailed as the world’s first “sub-4”. On November 24th 2018, Yusheng Du, a Chinese Rubik’s Cube enthusiast, solved a standard 3x3x3 cube in an astonishing 3.47 seconds. The feat, now an official ...
For this puzzle with over 43 quintillion permutations, author Ian Scheffler explains how players have found the most efficient route to resolving a Rubik’s cube. Lydia Chain is a freelance science ...
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