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 Rubik’s Cube has only six faces, each presenting only nine cubelets, but the end result is to offer a mind-boggling number of permutations, only one of which embodies the desired solution. The ...

In the quiet before the whir of motion, a cube sits scrambled. Then, in the time it takes to blink—actually, even less—it’s done. Solved. Six uniform faces, each a solid hue. It took just 0.103 ...