Can anyone give a formula for the fourth order Rubik s Cube tricks?

Formula MR2 B2 U2 ML U2 MR' u2 mr u2 f2 mr f2 ml'B2 MR2 and MR2 U2 MR2 TU2 MR2 MU2 The owner of the floor knows how to turn by looking at the ** action below. The first 15 steps are the flipping formula.

The second 6-step is the swapping of two edges.

The formula mr refers to the right layer of the middle layer, which is the second layer from the right. MR is to turn 90 degrees clockwise on the right layer, MR'It is counterclockwise on the right layer. MR2 is 180 degrees, and ML is the second layer from left.

ML is 90 degrees clockwise on the left layer'is counterclockwise on the left. ML2 is 180 degrees. mu is the second layer from above.

tu means that the upper two layers are rotated together. Tu2 is the upper two layers turned 180 degrees.

I haven't played for a long time, I just remember one After the six sides are the same color, just face a face, the middle two rows are turned back 90 degrees, and then the whole Rubik's cube is turned 90 degrees clockwise, and the middle two rows are turned back 90 degrees, and then the whole Rubik's cube is turned 90 degrees clockwise, and the middle two rows are turned back 90 degrees.

The formula for the fourth-order Rubik's Cube is:

u: upper layer; mu: the second layer on the upper count;

d: lower layer; MD: the second layer of the lower number;

l: left layer; ml: second layer from left;

r: right layer; MR: second layer from right;

f: front layer; MF: the first second layer;

b: rear layer; mb: the second layer after the count;

The yellow center block is aligned, the opposite side of the yellow is white, and the white center block is also aligned, but the yellow one cannot be disrupted; Put the yellow on the top surface and turn the red center quickly; The left side of red is blue, turning to a blue center block; The last two sides of the center block rotate together, red opposite orange, blue opposite green (there is a formula to refer to) put blue behind yourself.

Chinese milestones of the Rubik's Cube:

On October 1, the Guangzhou Open was held in Nanwu Middle School in Guangzhou, which was the first professional Rubik's Cube event in China, and all the results were recognized by the WCA. It indicates that China's Rubik's Cube competition is moving towards regularization and beginning to be in line with international Rubik's Cube competitions.

The Beijing Summer Rubik's Cube Open is the most important milestone for China's Rubik's Cube to the world. The astonishing lineup of more than 150 participants gathered the most complete Rubik's Cube masters in China's history, with 14 national records, 2 Asian records, and 5 world records.

Born in this game. The Party School of the Ministry of Railways, where the competition was held, has also become a place that that generation will never forget.

On July 31, Yangzhou Rubik's Cube Association held its first general meeting, and on November 16 of the same year, it obtained the registration certificate of social group legal person, becoming the first Rubik's Cube Association in China to be supervised by the Sports Federation and officially registered with the Civil Affairs Bureau. China's Rubik's Cube has finally been recognized, and it is happy and nervous to take a solid step towards the goal of entering the sports sequence.

1. There are four layers in the fourth order, one on the left and one on the left, and two layers in the middle. To denote the names of these two layers, ML represents the middle layer on the left and MR represents the middle layer on the right.

2, and the indication of the steering is written as: ml mr is 90 degrees clockwise; ml' mr'90 degrees in a counterclockwise direction; ML2 MR2 or ML'2 mr'2 is to rotate the layer 180 degrees.

The fourth-order Rubik's Cube special case formulas are uw2 ( mr2 u2 )2 mr2 uw2, rw u2 cr (rw u2)2 rw' u2、lw u2 rw' u2 rw u2 rw' u2 rw'。

The formula for the speed twisting of the fourth-order Rubik's Cube has rw u rw'、rw u' rw'、lw' u lw、lw' u' lw、rw u'2 rw'、lw' u2 lw、r u r' f r' f' r、uw'（r u r' f r' f' r）uw、r u r' f r' f' r。

When the fourth-order Rubik's Cube is restored, the yellow and white center blocks are first put together, and then the blue, red, green, and orange center blocks are completed. Completing 12 pairs of edges is done with r u r' f r' f'r Find a pair of edges, let the pair of edges be on top or down, first stagger the upper two layers to the right, make a formula, and then return the upper two layers to the left.

The center of the first type is a sphere, and each small piece around the perimeter is connected to the slide rail of the center ball, which slides in the direction of force when moving. The second type is the fourth-order Rubik's cube with the axis as the core, which is very complex in composition, and has many additional parts in addition to the center ball and the surrounding blocks.

The fourth-order Rubik's Cube reduction formula is as follows:

Up, right, down, right, backward, and left - swaps the positions of the small squares on the two adjacent vertices above.

Up, left, down, down, - swaps the positions of the small squares on the two diagonal vertices above.

Up, Left, Bottom, Left, Up, Left, Left, Left—The small squares on the three vertices above rotate 120 degrees.

Up, left, up, left, up, right, right, right - swap the small squares in the middle of the three edges in turn, and ensure that all the other small squares do not move, and all the formulas can ensure that the position and angle of the small squares below remain the same. You can start with one side of the Rubik's Cube and use this as the bottom.

Use the formula to adjust the position of the four small squares on the vertices above.

Use formula 3 to adjust the angles of the four small squares on the vertices above.

Use formula 4 to adjust the other small squares on the edge.

u: upper layer; mu: the second layer on the upper count;

d: lower layer; MD: the second layer of the lower number;

l: left layer; ml: second layer from left;

r: right layer; MR: second layer from right;

f: front layer; MF: the first second layer;

b: rear layer; mb: the second layer after the count;

The yellow center block is aligned, the opposite side of the yellow is white, and the white center block is also aligned, but the yellow one cannot be disrupted; Put the yellow on the top surface and turn the red center quickly; The left side of red is blue, turning to a blue center block; The last two sides of the center block rotate together, red opposite orange, blue opposite green (there is a formula to refer to) put blue behind yourself.

The first step can be rwurw'and then use RUR'fr'f'r, at this time, it can be operated as a third-order Rubik's cube. Use RUR'Or RUR'urur', use U again'f'ufuru'r'homing; With fsrur'u'f'Flip, finally r'u2rur'Repeat the adjustment.

Before introducing the formula, it is important to understand the technical terminology of the Rubik's Cube. Among them, the Rubik's cube is replaced by the letters FBLRUDM, the letters W represent two layers, and the number is replaced by how many turns, if there is a small punctuation point, it means clockwise rotation. For example, r'2 means that the right side is rotated counterclockwise by 2 90 degrees, which is 180 degrees.

The first step of the fourth-order Rubik's Cube formula can be used with the formula rwurw'to put the yellow block in the middle, if there are two yellow blocks of the same type, use the formula rwu'2rw'Flip it down; In the second step, you can use the formula rur when you complete the edges'fr'f'r to turn, can be repeated and used many times, at this time the closed digging and waiting for filial piety liquid can be used as a third-order Rubik's cube to continue.

In the third step, the bottom corner is homing, and the formula rur can be used'Or RUR'urur'That's it; The fourth step is to follow the formula u'f'ufuru'r'Just return to the position; The fifth step is more complicated, using the formula fsrur'u'f'Or flip over to it and continue repeating the formula; Step 6: Use r'u2rur'your and rb'rf2r'brf2r2;The last step ru'rururu'r'u'R2 completes the craft.