Any Rubik's Cube can be solved in 20 moves, but it took over 30 years for anyone to figure that out

In 2010, a group of mathematicians used a bank of supercomputers at Google to show any Rubik's Cube could be solved in 20 moves.
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Student’s robot smashes 4x4 Rubik’s Cube world record - by 33 seconds

A University of Bristol student has smashed the world record for solving a 4x4 Rubik’s Cube with a robot. Matthew Pidden, 22, built 'The Revenger' in 15 weeks for his dissertation, and it solved the ...
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Rubik's Cube Record Smashed in Less Time Than It Takes to Blink

Records are there to be broken, but when it comes to the fastest time to solve a Rubik's Cube by a robot, it's difficult to see how much more progress can be made: the latest record-breaking time ...