How to restore the second order Rubik s Cube How to restore the second order Rubik s Cube?

1. Restore the bottom corners, white turns to the right at the first time on the right, and white turns to the front at the first time on the front. If the white color is on the top surface, as shown in the figure below, it will become case 1 if you use the formula ru once, or use f once'u'It's good to turn into case 2 and then deal with it as case 1 or 2.

2. Restore the color of the top surfaceIn this step, we need to restore the color of the top surface of the 4 corner blocks, and leave them for the last step to restore without caring about the color of the top side of the top layer.

3. Restore the top corner blockTo complete the restoration, you need to restore the colors of the top 4 sides at one time, and complete the restoration of the Rubik's Cube, only need to remember a new algorithm.

Second-order Rubik's Cube features:

The second-order Rubik's Cube has 8 corner blocks with 8!24=1680 kinds of position arrangement, each arrangement has 1107 color directions (color direction is conserved in twisting, and most of the theoretical color directions of 3 to the 8th power are not possible), that is, the second-order Rubik's Cube is scrambled and has a total of (8!3^7)/24=7!

3 6 = 3674160 states.

The farthest recovery distance of the second-order Rubik's Cube (i.e., the state that most requires the most steps of recovery) is 11 full rotations, or 14 normal rotations, which can be calculated by a computer using an exhaustive algorithm.

The question of how to restore the second-order Rubik's Cube requires a third-order foundation.

You can think of the second order as the third order, and all the formulas and gameplay of the third order apply to the second order.

In fact, there are not only second-order, four, five, six, seven......

All of them have to be transformed into the third order.

Therefore, the third order is the foundation, and the third order will be completed, and basically all the positive levels can be played.

How to restore the second-order Rubik's Cube.

Step 1: Find a corner block with a white side and put it on the bottom surface, and then look at the color of the other two sides of this piece, for example, if it is blue, find a corner block of blue and white. Then make the blue face to yourself, and the white hand to the right hand and the left hand if the white is left.

The right-handed formula is: top right, hit left, bottom right. The left-handed formula is: top left, hit right, bottom left.

Step 2 (take the top yellow as an example): first position the top surface, if the top surface is not yellow, turn the yellow to the left. If the top surface has a yellow color, place the yellow corner block on the lower left. If there are two yellows on the top side, put the yellow side against yourself.

Then memorize this formula: top right, hit left, bottom right, hit left, top right, hit left twice, bottom right.

Step 3: Two pieces of the same color face yourself, then use the following formula: top right, back boiling water, top right, boiling water twice, bottom right, back off water, top right, boiling water twice, top right twice.

Boiling water means turning 90 degrees clockwise on the side facing you, and turning 180 degrees twice.

The second-order Rubik's Cube, also known as the pocket Rubik's Cube, mini Rubik's Cube, small Rubik's Cube, and Ice Cube Cube, is a cube structure of 2 2 2. There are only 8 corner blocks in itself, and there are no other structural blocks. The structure is similar to that of the third-order Rubik's Cube. It can be restored using the formula of the third-order Rubik's Cube.

1. First restore the bottom corners: this step is to restore the 4 corners of the bottom layer.

2. Use algorithm 1 to the right for white, turn to the right first, r u r2 r u r2.

3. Use algorithm 2 to move forward in white, first turn the curved surface of the large stove, f2 u2 f u f2 u2 f.

4. Repeat 4 corner blocks, and you can do a good job of the bottom layer.

5. Then restore the top color: this step is to restore the color of the top surface of the 4 corner blocks.

6. Situation 6 is to use formula 2-2 first, in other cases use formula 2-1 first, and in other cases use formula 2-1 first.

7. Then restore the top layer of the corner block: if there is a situation like this, rotate the corner block of the same color to the position facing you.

8. Use this algorithm again: r b2 r f2 r2 b r f2 r2, you can complete the code into a reduction and boring.

The second-order base model demon Mu Feng did not have a way to recover.

Its principle is very simple, it is nothing more than two sides first, and then directly adjust the corner blocks of the upper and lower layers, and it is done! This step is called xll

Important: There is no need to think about aligning the colors when completing the bottom and top sides! Only need to complete both sides first! This is the key to the rapid destruction of this method of detoxification

Process: Step 1: Bottom -- Step 2:

Top (OLL) - Step 3: Overall Corner Change (XLL) Complete Type Return! Step 1:

It is very important to observe the 15-second cave rise in this step on the bottom surface, try to complete the first side within 15 seconds, and strive to complete the side within 2 seconds!

Step 2: OLL (2nd Side) The trapped finger OLL of the second-order Volt people is not very much, and the Wang Hall is equipped with the following formulas, and the formula is very convenient oll1 r2 u2 r' u2 r'2oll2 f rur'u' rur'u' f'oll3 f r u r' u' f'oll4 r u r' u' r' f r f' oll5 f r' f' r u r u' r'

Step 3: In this step, the speed of observation is the most important, here is not like the third order, only need to judge one layer, you need to judge the upper and lower layers of the silver break at the same time, but this step of the PLL only three major situations, very good judgment, mainly to observe the adjacent color block. The upper and lower layers of socks stupidly diagonally change judgment skills:

The whole Rubik's Cube is divided into two layers, and then the upper and lower layers are not the same color together r2 b2 r2 r2 upper layer of the first two adjacent angles of the lower layer diagonal judgment skills: The whole Rubik's Cube is divided into two bucket banquet layers, only the upper layer has two identical colors put together If the lower layer is put together, immediately turn the entire Rubik's Cube 180 degrees r' u r' b2 r u'rThe upper and lower layers are only changed to the two adjacent angles in front of the judgment skills: The whole Rubik's Cube is divided into two layers, and both layers have two identical colors put together R2 U' r2 u2 f2 u'r2Of course, maybe you're lucky, (or unlucky) to have one side done when you finish both sides, then there are two more PLL cases L' u r' u2 l u' l' u2 l r u'r u' r' u' f2 u' r u r' u f2r u2 r' u' r u2 l' u r' u' l

1. First of all, the second-order Rubik's Cube does not have a central block, so just find a side with a white corner that you love.

2. Then, use the third-order Rubik's Cube to find neighbors to restore the two corner blocks, and after that, check whether the restored corner blocks are of the same color.

3. Use the same method to restore a corner block.

4. And so on, put the remaining corner blocks together, and check whether the color is the same under the white corner blocks.

5. After the bottom surface is spelled, the top surface is spelled. In various cases, please follow the mantra in the picture to complete the top surface.

6. After completing the top surface, the next step is to find the finished surface and face yourself.

7. After finding it, face the finished face to yourself, and then follow the mantra in the picture to complete the six sides. If you can't find the finished face, just find a non-white and yellow face in the picture.

Second-order Rubik's CubeRecovery Method:Ascending, right, up, right, up, up, forward, up The second-order Rubik's Cube is a relatively simple Rubik's Cube, also known as the Pocket Rubik's Cube, the Mini Rubik's Cube, the Small Rubik's Cube, and the Ice Cube Cube, which itself has only 8 corner blocks and no other structural blocks.

Structure with a third-order Rubik's Cube.

Similarly, it can be restored using the formula of the third-order Rubik's Cube.

The origin of the second-order Rubik's CubeThe earliest second-order Rubik's Cube patent was Rubik.

Professor Airnay applied for the patent number on March 29, 1983.

4378117, we are used to calling it the second-order Rubik's Cube with R structure.

On October 27, 1998, Chen Senli of Taiwan's Dongxian Company applied for a second-order patent for another land-making structure, US Patent No., US5,826,8715826871, which we are accustomed to calling the second-order Rubik's Cube of Dongxian structure.

Step 1: The bottom edge is home, also known as cross, which means cross reduction in English, choose the white side as the bottom surface, and set a cross on the bottom layer of the Rubik's Cube.

The reduction edge is to spell out a cross on each surface, and the cross is not according to the surface, but according to the layer. Return the first layer first, that is, spell out a cross on the first side.

Step 2: The bottom corner is to restore the four corner blocks of the first layer of the Rubik's Cube. Here are 5 different scenarios:

Step 3: The second layer of edges is the step of restoring the four edges in the middle layer of the Rubik's Cube. Here are 3 different scenarios:

Step 4: The top edge position, also known as the top cross, is that the four top edge blocks of the Rubik's Cube are all adjusted to the top surface with the same color as the top surface. In this step, the restoration step will switch from left to right in the four situations mentioned above, that is, when encountering the "point" of posture judgment, it will be a "small turn" after the action, and then "a trace of beams", and finally become a "cross".

Step 5: The top corner position is to adjust the top surface color of the four top corners of the Rubik's Cube sail to the top surface.

Step 6: The top edge is in place, so that the color of the other side of the four top edges of the Rubik's Cube is the same color as the color of the other four sides where it is located. Step 6 of the order of the top four corners of the cube is complete.

Step 7: The top corners are in place, that is, the other two sides of the four top corners of the Rubik's Cube that have been placed are also the same color as the corresponding faces.