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.
The New York Times

‘Don’t Think, Just Solve’

Max Park is a longtime speedcubing world record holder — for the 3x3x3 cube, his best official time is 3.13 seconds. Let's show you how he does it. By Siobhan Roberts, Jeremy White, Sean Catangui and ...
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Student-built robot crushes world record by solving 4×4 Rubik’s Cube 33 seconds faster

Move over, human speedcubers. The Rubik’s Cube world has a new champion. Final-year University of Bristol Computer Science student Matt Pidden, seeking a dissertation project, discovered the robot ...