On the question of the fourth order Rubik s Cube to reduce the corner blocks

The central block of the fourth-order Rubik's Cube can be swapped in pairs, which cannot appear in the third-order Rubik's cube. For example, when you're white-faced. The four central blocks in the middle (think of the same color as a whole) should be red, blue, orange, and green from left to right, but the fourth-order Rubik's Cube can produce any arrangement of these four colors, so that you will not match each other when arranging the corner blocks.

So you should re-look at the order of the heart blocks, not to say that you can downgrade by putting together the four heart blocks that are scrambled, but also to look at the order of it. If you don't remember the order of the heart blocks, follow the order in which the corner blocks are pushed out of the middle four sides. Or look up the color scheme of the Rubik's Cube online (the color scheme of the Rubik's Cube is basically the same).

Or if you encounter a p-t, that is, after completing the degrade, two edges have swapped positions, which cannot appear in the Three Realms. The specific method can refer to the special situation of the four tutorials of the Rubik's Cube Station. If you don't want to search, you can post a picture and solve it for you.

My method is to first follow the formula of the 2nd order Rubik's Cube** four in the center of each side, and then grope to restore the middle two of each edge (you need skills, don't mess up the middle four) and then look at the same as a piece, it is now a third-order Rubik's Cube, you know later...

Take a look at the formula of the Rubik's Cube station, that's what I learned, and if you can't ask me again.

The fourth-order Rubik's Cube center block reduction formula has rw u rw'、rw u' rw'、lw' u lw、lw' u'lw, first put together the yellow and white two-sided center block, and then complete the blue, red, green, orange four-sided center block, first complete the yellow center block, keep the yellow center block unbroken, and then complete the white center block.

The fourth-order Rubik's Cube flipping formula has the in-situ flipping formula r u r' f r' f'r, the ridge formula uw' （r u r' f r' f'r) uw, the formula for the change of the edge ( formula of p) uw2 ( mr2 u2 )2 mr2 uw2, the formula of single edge flip rw u2 cr (rw u2)2 rw' u2、lw u2 rw' u2 rw u2 rw' u2、rw'。

The formula used in the fourth-order Rubik's Cube is 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 。

The special 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'。

where the formula letter left = l (left), right = r (right) expression: f (90 degrees clockwise), r'(right 90 degrees counterclockwise), U2 (upper clockwise 180 degrees).

Methods of restoration:

Place the 2 corners where you want to swap positions on the right-hand side:

Right 90 counterclockwise - top 180 - right 90 clockwise - top 90 - right 90 - top 90 - left 90 - top 90 - top 90 - right 90 - top 90 - 90 - left 90, end.

For good crosses (as a whole, all of the side crosses are good), according to the following formula 3, for the top surface, 4 for the four corners.

Top surface, four corners of the formula four:

Equation 1, f (r u r' u'）f'

Equation 2, r' u2 r u r' u r

Equation 3, r b' r f2 r'b r f2 r2 equation 4, (r u' r）（u r u r）（u' r' u' r2）。

Methods of restoration:Place the 2 corners of the position to be swapped on the right-hand side: 90 counterclockwise on the right side - 180 on the top side - 90 clockwise on the right side - 90 clockwise on the top side - 90 counterclockwise on the right side - top 180 - 90 clockwise on the left side - 90 counterclockwise on the top side - 90 clockwise on the left side, end.

Third-order Rubik's Cube. The Rubik's Cube is called the Magic Cube in Taiwan, the Twisted Dice in Hong Kong, and the Rubik abroad's cube. Invented in 1974 by Hungarian architecture professor and sculptor Ernor Rubik, the mechanical educational toy was originally called the Magic Cube and was sold by Ideal Toys in 1980 and changed its name to Rubik's cube。

The Rubik's Cube was the most popular in the 1980s. As of January 2009, more than 350 million Rubik's cubes have been sold worldwide.

The six-sided Rubik's Cube formula is as follows:

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

2. Up, left, down, down, down - swap the positions of the small squares on the two diagonal vertices on the top.

3. Up, left, down, left, up, left, left, left, left, the small squares on the three vertices above are rotated 120 degrees at an angle.

4. Up, left, up, left, up, right, right, down, right - exchange the small squares in the middle of the three edges in turn, and ensure that all the other small squares do not move.

5. Adjust the position of the four small squares on the vertices above.

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

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

The block of the fourth-order Rubik's Cube.

The fourth-order Rubik's Cube has a total of 8 corner blocks, 24 side blocks and 24 center blocks, and its composition is divided into two categories:

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.

As a racing sport, the fourth-order Rubik's Cube is the second type of movement, which is fast and not easy to get stuck in high-speed rotation.

The restoration of the middle edge of the fourth-order Rubik's Cube requires the following steps:

Find the correct position of the middle edge. First of all, it is necessary to determine whether some of the middle edges have been homed, and if so, then only need to place the unhomed middle edges in the correct position. If not, you need to place an intermediate edge in the correct position first.

Swap the middle and side edges. Swap the middle edge with the side edge so that the side edge is put back in place, and the middle high edge is placed in a position to be restored.

Perform rotational reduction of the intermediate edges. By rotating the Rubik's Cube, the core restores the middle edges to the correct position and ensures that the position of the side edges is not disturbed.

Repeat the steps above. If there are other intermediate edges that need to be restored, you need to repeat the above steps until all the intermediate edges are in place.

The formula for restoring the corner blocks at the top of the third-order Rubik's Cube is (r u r'u')(r u r'u')(r u r'u')(r u r'u').The steps and principles of the restoration of the top corner blocks of the third-order Rubik's Cube will be described in detail below.

1.The principle of the corner block reduction of the base shirt

In the third-order Rubik's Cube reduction, the top corner block is reduced by rotating the top corner block so that it is returned to position and matched with adjacent side blocks. With the proper formula and rotation operation, the top corner block can be restored to the correct position.

2.Step 1: Locate the problematic corner block

First of all, you need to look at the Rubik's Cube and find the top corner blocks that are not in the right place. These corners may have been placed in the wrong position or rotated in the wrong direction.

3.Step 2: Move the target corner block to the top surface

By rotating the bottom and middle layers, move the target corner block from the bottom or middle layer to the top surface. Make sure the corner blocks are on the top layer and facing the right direction.

4.Step 3: Apply the revert formula to rotate

Apply the top-level corner block reduction formula (r u r'u')(r u r'u')(r u r'u')(r u r'u') to rotate the operation. Executing this formula will restore the top layer of the Whisper Corner Block to the correct position and match it with the edge block.

5.Step 4: Repeat steps 2 and 3

If there are other top corner blocks that have not been restored, repeat steps 2 and 3 to find the problematic corner block and move it to the top surface, and then apply the restore formula again to rotate the operation.

Expand your knowledge:

Explanation and memory of formulas (r u r'u')(r u r'u')(r u r'u')(r u r'u') is the formula for restoring the top corner block, where r represents the clockwise rotation of the right face, r'Represents counterclockwise rotation of the right face, u represents clockwise rotation of the top plane, u'Represents counterclockwise rotation of the top plane. This formula requires memorization and skillful execution.

Other ways to solve the top corner block of the third-order Rubik's cubeIn addition to the reduction formula mentioned above, there are other ways to solve the top corner block of the third-order Rubik's cube. For example, other solutions such as the layer-first method or the CFOP method can be used. Different methods may have different steps and formulas, choose the solution that suits you and practice it skillfully.

Resources for learning Rubik's Cube Solving Methods and techniques for learning Rubik's Cube restoration can be obtained through a variety of resources, including tutorials, tutorials, forums and communities for Rubik's Cube enthusiasts, and more. Through systematic learning and practice, you can improve the skill and speed of solving the Rubik's Cube. Remember, consistent practice is the key to mastering the Rubik's Cube reduction.

The third-order Rubik's Cube top-level corner block reduction formula has the following source Xunzi situations:

1.The top layer makes a cross of the same color: r' u2 r u r' u r2.

Make the corner blocks of the same color prosper to the hail position: r' u'r u'r' u2 r3.Align the middle ribs:

r u2 r' u' r ur' u' r u' r'

4.Return the top edges to R2 d' r u2 r'd r u2 r Please note that these formulas may seem complicated, but by following the formulas step by step, you can restore the Rubik's Cube.

There will be 2 special situations Wu Min:

1. Unilateral flanking.

Formula: MR2B2MR'u2mr'u2b2mr'b2mrb2mr'b2mr2b2

Use this formula to flip the middle 2 edges.

2. Opposite edge exchange (adjacent edge exchange, adjacent angle exchange, and diagonal exchange can be converted into opposite edge exchange by the formula of the third order).

Formula: mr2u2mr2tu2mr2mu2

First-level restoration

The restoration of the fourth-order Rubik's Cube sedan orange Zen can also be done using the layer-first method. The four-level pre-method is constantly changing, and the formula of the three-level pre-method is used to restore.

The first step is to restore the bottom surface.

Restore the bottom surface: the method is the same as the third order; First, restore a center of four faces; After that, the best way to align the edges is to align the edges from the side of the cube and place them next to the restored center face. Again, align the four sides by placing them on the top surface and bottoming them at the bottom, so that it is regular and does not cause confusion.

Pay attention to their order! Finally, the good white corner blocks.

The second step is to restore the second layer.

Restore the second layer: In this step, the wing is restored first, and then the recovery point. Here is the restoration formula that uses the second layer of the third-order Rubik's Cube in a modified way.

The fourth-order Rubik's Cube is a very complex Rubik's Cube that is more difficult to restore due to its more blocks and more ways to move. In the process of restoring the fourth-order Rubik's Cube, Huiyuan may encounter some special circumstances, such as some blocks not being returned to their positions or not being rotated to the correct position. Here's how to restore for these special cases:

1.For blocks that are not homed, the "cosmic method" reduction method can be used. The principle of this method is to keep the unhoming blocks in place, and then when the rotation is complete, the blocks will move to which position.

The blocks are then rotated accordingly to return the blocks to their positions. This method requires a certain amount of experience and skill, but it is very effective for some difficult situations.

2.For blocks that are not rotated to the correct position, the "reverse method" reduction method can be used. The principle of this method is to rotate the reverse side of the block to be rotated to the correct position and then turn it back again.

This method requires a certain amount of skill and experience, but it is very effective for some difficult situations.

3.If you encounter some very complex or unsolvable situations, you can consider directly disassembling the state balance cube and reassembling it. This method requires great care and patience, but for some cases, it is the only way to fix it.

In conclusion, restoring the fourth-order Rubik's Cube is a very challenging task that requires patience, skill, and experience. There are different restoration methods for different situations. You only need to master a few basic skills to solve most of the problems.