Layer-first method of Level 3 cube cracking

A messy cube such

Brief description of the cracking process: 1. Bottom layer with blue as the base layer; 2. Middle Layer; 3. Bottom layer with Green Cross; 4. Green Cross position adjustment; 5. Adjust the positions of the four top corners of the top layer. 6. Adjust the positions of the four top corners of the top layer.

In this way, it may take about two minutes to turn into a chaotic cube.

 

Pre-defined: U: rotate the top layer clockwise;

F: rotate the front counterclockwise;

R: rotate the right area counterclockwise;

L: rotate the Left area counterclockwise;

D: rotate the bottom layer counterclockwise;

After adding ', it indicates that the rotation is counter-clockwise.

1. Bottom layer with blue

Purpose: display an inverted 'T' word on each side, for example. This step is very simple, and the method is omitted...

 

(For ease of display, the underlying layer is temporarily turned up)

Ii. Intermediate Layer

Objective: To improve the intermediate layer, the effect is as follows:

 

Method: There are three cases

(1)
Medium, the red and yellow blocks are to be moved to the middle edges on the right.

Formula
: Uru'r'u'f' UF

 

(2)
Medium, the yellow orange block is to be moved to the left center.

Formula: u'f' ufuru 'R'

 

(3)
Medium, the white orange block on the middle edge is in the correct position, but the orientation is not correct. You can move it out and turn it into one of the above two to solve the problem.

 

3. Turn to the upper layer and see a Green Cross

Target: The top layer has a Green Cross, as long as the position is correct,

 

Method: frur 'u'f'. In this formula, the orientation of the Front block and the back block of the top-layer cross is flipped. The left part is not moved, and the remaining three parts are shifted counterclockwise.

If you do not understand it, don't worry. first use the formula for several times. If you never do it, you can try again several times from another angle.

Iv. Green Cross position adjustment

Purpose: match the top-layer cross side, for example:

 

Method: first orientation the white area to itself, rotate the top layer, and match the green white block.

Use the formula RUR 'uruur'. This formula shifts the Left area, right area, and back area of the top Green Cross counterclockwise.

If the formula is used three times and the top-layer Green Cross is not set, you must change the color area to your own, and repeat the formula three times or less.

5. Adjust the four corners of the bottom layer

Objective: To set the four top corners of the top layer. The orientation can be incorrect,

 

Method: rotate the top layer to make a proper corner. Use the formula uru'l 'ur 'U' L to shift the remaining three corners counterclockwise. After the formula is 1-2 times, the top corner should be reset.

6. Adjust the orientation of the four top corners of the top layer

The last step is very simple, but don't worry.

Method: select a corner with the correct position and incorrect orientation, and turn the entire cube to the top right corner. Use the formula: r'd RD 2-4 times to restore the top angle. At this point, the cube has become messy. Do not worry. As I said, it will be gradually restored.

Rotate the top layer and move the top angle of the orientation to the top right corner of the front. Repeat 'D' RD 2-4 times. Similarly, it handles the top corners of other locations that have not been restored.

As shown below, you are done!