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 Apr 2023

www.cube20.org www.cube20.org

God's number is 20. Proven by Tomas Rokicki, Herbert Kociemba, Morley Davidson, and John Dethridge


www.popularmechanics.com www.popularmechanics.com

Instrumental to this era of speed cubing was Dr. Jessica Fridrich, who in 1997 developed a method for solving the cube faster than ever. Most of the fastest cube solvers nowadays use some version of the Fridrich method.

no algorithm can flip a single edge in place

There aren’t any algorithms that can swap only a pair of corners, nor only a pair of edges.

swapping a pair of edges and a pair of corners cancel each other out, since there’s an algorithm to undo that.
