Restore method:
There are many ways to restore the third-order Rubik's cube, among which the "layer first method" is the most suitable method for beginners to master.
A third-order Rubik's cube can be understood as "top", "middle" and "bottom" from top to bottom. The so-called "layer first method" is to restore layer by layer.
Historical evolution of Rubik's cube formula
1970 In March, Larry Nichols invented the "jigsaw puzzle with rotating pieces 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, two years earlier than Professor Ern Rubik's Rubik's Cube.
Ern Rubik is a Hungarian professor of architecture and sculpture. 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 gravel in the Danube.
Refer to the above? Baidu encyclopedia-third-order Rubik's cube