Third-order Rubik's cube trick

The tricks of the third-order Rubik's Cube are as follows:

The four central squares of the Rubik's Cube are fixed and the colors are opposite. Choose your favorite color and start making petals. The following is a blue-centered explanation.

Step 1: Make the colors of the four corners of the cross petals on the corresponding surface as shown in the figure. No matter, there is no formula in this step.

Step 2: After observing the color of each petal edge as shown in the figure, rotate each edge clockwise 180 degrees. This step must be remembered, which helps to quickly restore a layer of Rubik's cube. After the four petals are completed, the bottom cross is completed, as shown below, and the four corners are randomly colored.

Step 3: Cross upward, find the bottom green of each side first, observe its side color, and make the corresponding formula.

① Right hand formula: upper right, upper right, upper right, upper left, upper left, upper left, upper left, upper left, upper right, upper right, upper left; If the green is at the bottom, first turn the bottom green to the corresponding position at the top, and then turn it up.

Step 4: Take the finished surface as the bottom surface, observe the color of the modules at the cross position corresponding to the central block on the top surface, and carry out the second layer reduction, and preferentially find the modules with different colors from the top central block for rotation.

The red top surface rotates to the same opposite side as its side center block, and the corresponding formula is made at the position of the side center block, that is, the left-hand formula is the same as above. Special case: If there is no available module for the cross corresponding to the top center block, observe the two-layer reduction, and first select the unfinished side as the left-handed formula.

Step 5: Restore the top floor: ③ Linear formula, point formula and V formula: forward to the right, right to the top, forward to the top.

④ Small fish formula: two fish eyes are on the left hand side, lower right and upper right, upper right and upper right, lower right and upper right.

⑤ Big fish formula: The fisheye is supported by the left hand, with upper right and upper left, lower right and upper left, upper right and upper left, lower left and lower right.

Case 1: the top surface and one side surface simultaneously complete the other three surfaces u.

⑥ Make a U-shaped formula: one side of the U turns to the left, and the middle U-shaped formula: upper right and upper right, upper right and upper left, upper right and upper right, lower right and lower right. Case 2: When the top surface is completed, a U appears, with the top facing itself and one side of the U facing the right hand.

7. Make the inverted L formula: turn right clockwise 180 degrees, turn bottom clockwise 180 degrees, turn bottom right, upper right, upper right, upper right, lower right and then turn 180 degrees, and bottom right, upper right, lower left and lower right.

The formula can be used flexibly until it is finally restored successfully. If you want to learn the Rubik's Cube, you must be patient! Come on, I like you!