The third-order Rubik's cube formula is the simplest.

The surfaces corresponding to Top, Right, Left and Front are shown in the following figure:

+:Rotate 90 clockwise?

-:Rotate 90 counterclockwise?

2: Rotation 180? (in the same way)

For example, "right+"means that the right side rotates clockwise by 90? , "left-"means that the left side rotates 90 counterclockwise? (left+ and left- are easily confused), "up 2" means to rotate upwards 180?

In this tutorial, blue is the front, red is the right, yellow is the top, and orange is the left.

A * * * is divided into six steps:

First, the bottom spell is good.

Second, the intermediate level.

① Up+Right+Up-Right-Up-Front-Up+Front+

② Up-front-up+front+up+right+up-right-

Intermediate assistance: ① Right+Up-Right-Up+Front-Up 2 Front+Up 2 Front-Up+Front+

Intermediate auxiliary: ② Right 2, Up 2 (repeated three times)

Third, the top crosses.

③ Right-Up-Front-Up+Front+Right+

Cross-assistance: ① Front+Right+Up+Right-Up-Front-

Fourth, the top is comprehensive.

④ Right-Up-Right+Up-Right-Up 2 Right+Up 2

Five, the top four corners

⑤ Right+Up 2 Right Upper Right+Up 2 Left Upper+Right Upper Left+

Sixth, the final formula

⑥ Top 2+ Left+Upper Right 2 Right+Upper Left+Top 2