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What we usually call the Rubik's Cube is a 3×3×3 cube structure. The Hungarian architect Rubik Ernő invented it in 1981.
Different restoration methods are suitable for players at different stages. For beginners, the easiest way to understand is the "layer first method". Generally speaking, the simpler the method to use, but the problem that comes with it is that the fewer steps, the more formulas you need to memorize.
Below we introduce various methods:
Layer By Layer
Layer By Layer (abbreviation: LBL) refers to dividing the Rubik's cube into three layers: the bottom layer, the middle layer, and the top layer, and then layer-by-layer restoration.
Steps: 6 steps or 7 steps; formula amount: about 5-10; average number of restoration steps: 100+ to solve Rubiks cube 3x3
How this method can solve Rubiks cube 3x3
This method is most suitable for beginners to master. After practice, ordinary people can use a good Rubik's cube to achieve the level of recovery within 1 minute. The layer-by-layer method to restore the Rubik's Cube is divided into six or seven stages, and the whole is "restored by layers". This method is aimed at "entertainment" players, with easy understanding as the criterion, and minimizes observation and judgment, thereby reducing decision-making costs.
The first stage: for the first layer of "cross", restore the first layer of edges
The second stage: restore the first layer of corner blocks
The third stage: restore the middle edge
The fourth stage: for the third layer "cross", restore the third layer of edges
Stage 5: Flip the third layer corners, align the colors
The sixth stage: adjust the position of the corner block of the third layer, and the restoration is completed
Picture to show how to solve a 3x3 rubiks cube:
Method 8355 Solve Rubiks Cube 3x3
8355 - Invented by Reheart Sheu of Taiwan, China, the method is similar to the layer-first method, but with fewer formulas.
Steps: 6 steps; formula quantity: 3; average number of restoration steps: 100+.
The basic idea is to restore the bottom cross first, then restore the bottom three corner blocks, and not restore the fourth corner block, but use this empty slot to restore the three middle-level edge blocks and the three top-level edge blocks. The next step is to restore the two remaining edges. The final step is to use the formula RUR'U' repeatedly to restore the remaining five corners.
8: Similar to the LBL method, the first layer is completed, but a corner is deliberately left unopened and reserved as a "Working Area"
3: Use the working area to insert the 3 sides of the second layer, unlike the "eight-step method" that requires two mirror movements in the LBL method
5: Use the work area to return the top layer and the 5 sides of the work area, unlike the LBL method, which requires the "six-step method" and two mirror OLL formulas
5: At this point, there are 5 corners of the top layer and the work area left. Using a simple back and forth action, you can achieve the position change and flip direction. At this time, a block is completed.
Roux Method Solve Rubiks Cube 3x3
Roux Method, Invented in 2003 by Gilles Roux. It is a method that is easy to learn and can achieve very good results on how to solve a 3x3 Rubiks cube.
Steps: 4 steps; formula volume 9-42; average reduction steps: about 50.
The restoration idea is to first make a 1x2x3 block on the left, and then make a 1x2x3 block on the right. Leave the top layer and the vertical middle layer free to rotate. The next step is to restore the orientation and position of the top 4 corner blocks, and the last step is to restore the remaining six edge blocks and four center blocks (6E4C) just by turning U and M. This method can be said to be the method with the shortest number of steps in the quick-twist reduction, but because it has many M layers of rotation, it is not very suitable for the reduction of the fewest steps.
CFOP Solve Rubiks Cube 3x3
Fridrich Method (abbreviated as CFOP), originally contributed by David Singmaster, René Schoof, Jessica Fridrich, Hans Dockhorn, Anneke Treep and others in different parts of the idea, and the supplementary formula was compiled by Jessica Fridrich in 1981 and spread.
Steps: 4 steps; formula quantity: 119; average number of restoration steps: about 55.
CFOP is essentially a variant of the layer-first method, but because it summarizes various situations that may occur, the amount of memory needs to be increased many times (119 formulas), but it can also effectively increase the speed.
Turn the bottom layer out to a cross that matches the distribution of the color blocks (Cross)
At the same time, return the bottom corner block and the corresponding edge block (F2L, First 2 Layers), 41 formulas
The top layer uses formulas to unify the colors (OLL, Orientation of Last Layer), 57 formulas
Unify the color of the top layer side (PLL, Permutation of Last Layer), 21 formulas
Most Rubik's Cube masters now use the Fridrich Method, because compared to the speed it can achieve, the memory of 119 formulas is not much.
CFCE Solve Rubiks Cube 3x3
CFCE was invented by Guus Razoux Schultz, and it was invented at the same time as CFOP.
Steps: 4 steps; formula quantity: 112; average number of restoration steps: about 54.
The specific idea of CFCE is similar to that of CFOP. The first two parts are the top cross and the first two layers. The third step is to restore the direction and position of all top corner blocks (CLL) by one-step formula, and the last step is to restore the direction and position of all edge blocks on the top layer (ELL).
ZB Method Solve Rubiks Cube 3x3
ZB Method (Zborowski-Bruchem), co-invented by Zbigniew Zborowski and Ron van Bruchem in 2002, belongs to the advanced method of CFOP.
Steps: 3 steps; formula quantity: 799; average number of restoration steps: about 45.
The basic idea of ZB Method is to complete the adjustment of the top edge block direction (ZBLS) at the same time when entering the groove in the last group of F2L. Finally, the top layer only needs to restore the direction position of the corner block and the position of the edge block, and this step can even be completed by one-step formula (ZBLL).
VH Method Solve Rubiks Cube 3x3
VH Method (Vendenbergh-Harris), co-invented by Lars Vandenbergh and Dan Harris, is an advanced method of CFOP.
Steps: 3 steps; formula quantity: 525; average number of restoration steps: about 48.5.
The idea of VH Method is to not directly restore the last group of F2L, but to make it into a standard state first, and then restore the direction of the top edge block and the last group of F2L (VHLS) at the same time. There are 32 cases in this step, It is easier to master than ZBLS. Next, do the restoration of the top layer, you can use methods such as COLL or ZBLL. This method is widely used in one-handed restoration
ZZ Method Solve Rubiks Cube 3x3
ZZ Method (Zbigniew Zborowski), invented by Zbigniew Zborowski in 2006, this method takes into account the short number of reduction steps and the smoothness of reduction, especially for one-handed reduction.
Steps: 3 steps; formula amount: 20-537
Average number of restoration steps: 44-55.
The idea of ZZ Method is: the first step to complete the EOLine, you need to adjust all the edges to the correct orientation and restore the DF and DB edges. Next, the Rubik's cube only needs to be rotated through U, R, and L to complete the restoration. The second step is ZZ F2L. You can use the block construction method. Since the direction of the edge block does not need to be adjusted, it is very convenient to restore.
VRLS Solve Rubiks Cube 3x3
VRLS (Valk-Rowe Last Slot), originated in 2005 by Lucas Win
ter's WV method is an advanced method of CFOP.
There are 432 formulas in total, and 216 are actually memorized.
The basic idea of VRLS is that when the last group of 1x2x2 of F2L has been assembled but has not yet been inserted into the groove, if the direction of the top edge is all correct at this time, the OLL can be completed while the last group of F2L is inserted into the groove through a one-step formula. After being supplemented and sorted out by Mats Valk and Rowe Hessler in 2009, it has been possible to enter the last group of F2L into the groove through a one-step formula, regardless of whether the direction of the top edge is correct or not, to complete the OLL at the same time. And has been proficiently applied to the restoration of the game, and has achieved very good results
Petrus Method Solve Rubiks Cube 3x3
Petrus Method,Invented by Lars Petrus in 1981, it is a reduction method based on the idea of block construction.
Steps: 7 steps; formula quantity: 2-493; average number of restoration steps: about 48.
The restoration idea of Petrus Method is to complete a 2x2x2 block first, then develop it into 2x2x3, then repair the orientation of the remaining edge blocks, and then complete 2x3x3, that is, the first two layers. The last is to deal with the top layer, corner block orientation, corner block position and edge block position. This method is the most widely used method in the least-step competition due to the very small number of restoration steps..
Corner First Solve Rubiks Cube 3x3
Corner first method is to first return the eight corners of the cube to fix the color, then fill in the edge color, and finally complete the restoration.
This method has more formulas to memorize, so the speed will be faster than layer first. The fastest corner first Rubik's Cube master can restore the Rubik's Cube within 30 seconds.
These are the general how to solve a 3x3 rubiks cube ways. Which of the above methods do you know? Welcome to leave a message to discuss!
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