![]() One reason it took so long to answer such an apparently straightforward question is the surprising complexity of the Rubik's Cube. In 2010, a group of mathematicians and computer programmers proved that any Rubik's Cube can be solved in, at most, 20 moves. One immediate and obvious question, dating back to the original invention of the cube, is, given a particular configuration of a cube, what's the smallest number of moves needed to solve the puzzle? Relatedly, what is the smallest number of moves needed to solve any configuration of the Rubik's Cube, a number that cube aficionados refer to as "God's number?"Īs Erno Rubik put it in a recent interview with Business Insider, this question is "connected with the mathematical problems of the cube."Īmazingly, it took 36 years after the invention of the toy to come up with an answer.
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