If the cross on the top of the Rubik s cube can t be turned, how can the cross in the Rubik s cube t

1.Do you get the first two layers of your cube right?

2. Maybe your Rubik's Cube has the wrong edge.

3. The formula cannot be used in any situation.

With fru r'u'f'It's not useless. Look at the position of the edge and center block with the top color.

It can be used when there is only one center block. It will take the shape of a small L.

When the small L shapes, turn the small L on the top surface to the position of the four blocks on the upper left, and then make the formula, and it will become a "one" shape.

When you put the "one" in front of you, you can make a formula to appear the top cross.

If you have time, you can go to the Rubik's Cube station.

1. Whether to spell out the top cross (the wrong position does not count, the above can be the same).

2. If there are 3 edges on the top surface of the upper surface of one color, the other color is wrong, and the first two layers are spelled right, then you are sure that you are wrong, because the edges or corners of the Rubik's Cube are corresponding to each other, and there is no only one wrong situation, unless you use the 4th order.

There's something wrong with your Rubik's Cube.

If you can't turn out the top cross.

Remove the edges or corners.

After dismantling, put together a cross (don't move the others).

Tear down the Rubik's Cube and put it back together It should be no problem, if you like to play with the Rubik's Cube.

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This ** is good.

1. Spell out the bottom cross.

2, Yu Hong stupidly put the cross into a face.

3. The same color of the vertical bar is used as a reference surface.

1) Left: upside, left-side, up-turn, left-turn, up-turn, up-turn, up-turn, up-and-back, upside and back.

2) Right: up, right, up, right, up

Here is the magic formula formula, the full set is as follows:

The first step is to make a white cross;

The second step, the first layer of formulas: right order, up order, right inverse, up order, right order, up order, up order, right inverse;

The third step and the second formula: right order, upper order, right order, right order, right order, right reversal, right reversal, right reversal, right reversal;

The fourth step, the second layer of the formula is reversed: right inverse, upward inverse, right inverse, upward inverse, Lingjian right inverse, upward shun, right shun, right shun;

The fifth step and the third level formula: right order, up order, right inverse, up order, right order, right order, up order, right order.

Clockwise: r u' r u r u r u' r' u' r'2 counterclockwise: r'2 u r u r' u' r' u' r' u r'

Also, if the side color of the 4 edges is not right, you just need to do the counterclockwise formula, and then it will become the normal 3-cycle situation above.

Pay attention to the direction of the Rubik's cube when making the formula, and put the top layer facing the top layer when 3 cycles, and the side with the correct edge color facing the back (i.e. its opposite side facing you), and then make the formula.

And when the 4 are not right, just put the top layer on the top, and make a formula on which side you want.

The formula mentioned in the stem is incorrect, and the correct formula is as follows:

r u2 r' u r u2 r' u f' u' f

r'(The right hand side is turned 90 degrees counterclockwise), u'(90 degrees counterclockwise on the top), r (90 degrees clockwise on the right hand side), u'(90 degrees counterclockwise above), r'(The right hand side is turned 90 degrees counterclockwise), u'2 (180 degrees counterclockwise on the top), R (90 degrees clockwise on the right hand side).

The correct way to do it is as follows:

In this particular case, one of the edges of the second layer is reversed.

The formula can be restored with the edges of the second layer of the third order, and when the corner blocks are cyclic counterclockwise:

1. The right side is 90 degrees counterclockwise (that is, turning in the direction of the bosom, that is, turning 90 degrees to the left on the right).

2. The bottom layer turns 90 degrees to the left (counterclockwise).

3. 90 degrees clockwise on the right (reset).

4. Turn the top layer 90 degrees to the left (counterclockwise).

5. The top corner block is in place (three).

At this point, the Rubik's Cube can complete the reset.

The Rubik's Cube is formed by placing a third-order Rubik's Cube in a certain position, and according to this method, a lot of Rubik's Cube can be formed.

Rubik's Cube Learning.

Step 1: The top cross (as usual).

Step 2: Complete the first side.

Step 3: Complete the second layer.

Step 4: Form a cross: When there are two edges facing the same color direction, the two edges face backwards:

1. 90 degrees from left front to right.

2. The top is 90 degrees to the left.

3. The right side is 90 degrees upward.

4. The top is 90 degrees to the right (reset).

5. The right side is 90 degrees downward (reset).

6. Left front to left 90 degrees (reset).

Step 5: After the top level is completed, ensure that there are three corner blocks that are circular, and there is a "point" (fish head), and the face position is carried out according to the ordinary Rubik's Cube "small fish" method.

Step 6: Return the edges to the top level, ensure that the hue of the two adjacent edges is exactly right: according to the last step of the ordinary Rubik's Cube, the method of combining small fish one and small fish two is used.

Special note: Each time you "cut" the surface of the two edges with exactly the same hue, the color of the "point" (i.e. the fish head) directly opposite the surface must be the same color as the surface where it is located.

Step 7: Corner block transposition After the edges are homebound, ensure that the hues of the four edges are completely aligned, and one side has been completed before this step can be carried out. Note: Place the side of the Rubik's cube directly behind it.

Step 6: Algorithm: lf'lb2 l'flb2l2：

l (90 degrees clockwise on the left hand side).f'(Turn the side facing you, i.e. the side facing you 90 degrees counterclockwise) l (90 degrees clockwise on the left hand side) B2 (turn the back side 180 degrees clockwise).

l'(90 degrees counterclockwise on the left side) F (90 degrees clockwise on the left side) l (90 degrees clockwise on the left hand side) B2 (180 degrees clockwise on the back side) L2 (180 degrees clockwise on the left side).

You are wrong with the formula, it should be.

r u2 r' u r u2 r' u f' u' f

Formulas can't be memorized, you have to know what the situation is and what to deal with. In this particular case, one of the edges in the second layer is reversed. So you just need to memorize the formula for the restoration of the edges of the second layer of the third order to know how to reverse it.

a) Top layer cross.

After completing the second layer, the top layer will have the following three situations:

For the above three cases, we only need to remember one formula, which is:

Formula mumumuum'um'um'uu

Our ultimate goal is to make the top surface look like this.

If the top surface of your Rubik's Cube is already like this, then this step can be skipped directly, but not every time you will be so lucky, the formula still needs to be memorized. The following are the top three states and twisting methods.

Top view: black indicates a yellow block.

2) Top-level plane.

The first formula (left-handed formula): L'U'Lu'L' U2L

The second formula (right-handed formula): rur'uru2r'

7 situations encountered after twisting the top layer of the Rubik's Cube into a cross.

c) Top layer corner block.

After the top color of the Rubik's cube is unified, we begin to restore the position of the corners of the Rubik's cube, first turn the top layer of the Rubik's cube, find the two corner blocks in the correct position, put the side with the two corner blocks on the palm of the right hand, and then use the following formula to rotate the Rubik's cube to restore the corner blocks to the correct position.

Formula r2f2r'b'rf2r'br'

If there are no two corner blocks in the correct position, we can rotate the top layer of the Rubik's Cube, put the two corner blocks in the correct position on the diagonal, and then find one side and twist the above formula to get two corner blocks in the correct position on one side.

4) Top layer edges.

1.Start with the left-hand formula, turn the Rubik's Cube, and do the right-hand formula.

2.Start with the right-handed formula, turn the Rubik's Cube, and make the left-handed formula.

3.In these two cases, first find a side to make a left-handed (right-handed) formula, and then turn the Rubik's Cube to make a right-handed (left-handed) formula, you can get the above situation, and then restore it.

Rubik's Cube tutorial for beginners.

Third Floor:

After the second layer is put together. There will be 4 situations on the top surface (we will spell the word "ten" on the top surface next):

1.There is only one top color in the middle. Use the cross formula over and over again. Appearance 2

2.The top surface forms a top color. Turn the top face to turn the line into a vertical line. Use the cross formula again. Appearance 3

3.The top surface forms a right angle. One side up, the other side down. Use the cross formula again. Appearance 4

4.A "ten" word (needless to say in this case).

Cross formula: right-up-front-up+front+right+

Then the color. (The third layer is the same color as the side).

Color matching formula: right-up-right + up-right-top 2 right + top 2 Effect: The color of the top layer on the left remains unchanged. The remaining three sides of the middle color rotate counterclockwise.

until the color is the same in the middle of the four sides.

After the top cross is put together. Here are three formulas to spell out the top surface:

1.Left + Right - Up - Right + Up + Left - Up - Right - Up + Right + Effect: The top right corner of the top surface does not move. The lower right corner flips to the top of the upper left corner, the upper left corner flips back to the bottom left corner, and the lower left corner pans to the lower right corner.

2.Front + Right - Front + Left 2 Front - Right + Front + Left 2 Front 2 Effect: The top right corner of the top surface does not move. The rest of the triangles are translated counterclockwise for one round.

3.Left + Right + Up 2 Left - Right - Back + Front + Up 2 Back - Front - Effect: It's hard to say, just use it once after the six sides are good (this is also a shortcut formula).