How long will it take most people to recover the Rubik's Cube?

A beginner will stop learning in two to five minutes. After a while, most people will forget. Most people will stop learning in 40 to 50 seconds, and many people can't improve at this speed. But after this speed, the hand muscles will have muscle memory, and maybe they will remember how to recover after two or three years.

Development history

Early attempt

1970 In March, Larry Nichols invented the "jigsaw puzzle that can be rotated in groups" and applied for a Canadian patent. It is a 2×2×2 Rubik's Cube, but each Rubik's Cube is attracted by magnets. 1972 obtained the American patent (English), two years earlier than Professor rubik's third-order Rubik's Rubik's Cube.

give rise to

Rubik Erno is a professor of architecture and sculpture in Hungary. In order to help students understand the composition and structure of the space cube, he made the first prototype of the Rubik's Cube, inspired by the sand in the Danube.