Difference between revisions of "Layer by layer"

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'''Layer-By-Layer''', or normally only '''LBL''' is a group of [[method]]s that solves the [[cube]] in layers. In the basic, [[3x3x3 beginner methods#Layer By Layer|beginner LBL method]], the solver finishes the layers one at a time: the [[first layer]] edges, then corners, then the second layer edges, and finally the [[last layer]]. This is a common method for new cubers to discover on their own. In more advanced LBL methods, you solve layers more efficiently or solve two layers at once. For example, in the [[CFOP method]], one solves the [[first two layers]] simultaneously by forming a [[cross]] of the first layer [[edge]]s, and then filling in four [[pair]]s of a [[corner]] and an [[edge]] into the so-called [[slot]]s.
 
 
 
 
== 3x3x3 LBL Method ==  
 
== 3x3x3 LBL Method ==  
 
{{Method Infobox
 
{{Method Infobox
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|proposers=[[David Singmaster]] and others
 
|proposers=[[David Singmaster]] and others
 
|year=1970s
 
|year=1970s
|anames
+
|anames=Beginner's method, Samsara method
 
|variants=[[CFOP]], [[8355]]
 
|variants=[[CFOP]], [[8355]]
 
|steps=5+
 
|steps=5+
Line 18: Line 15:
 
}}
 
}}
  
There are many 3x3x3 methods that fully or partially use a LBL approach, including [[CFOP]], the method used by most top speed cubers in the world. Three examples of how cubers might approach LBL: 
+
'''Layer-By-Layer''', or normally only '''LBL''' is a group of [[method]]s that solves the [[cube]] in layers. In the basic, [[3x3x3 beginner methods#Layer By Layer|beginner LBL method]], the solver finishes the layers one at a time: the [[first layer]] edges, then corners, then the second layer edges, and finally the [[last layer]]. This is a common method for new cubers to discover on their own. In more advanced LBL methods, you solve layers more efficiently or solve two layers at once. For example, in the [[CFOP method]], one solves the [[first two layers]] simultaneously by forming a [[cross]] of the first layer [[edge]]s, and then filling in four [[pair]]s of a [[corner]] and an [[edge]] into the so-called [[slot]]s.
  
===Introductory 3x3x3 LBL===
+
==History==
 +
Although it is not known who first performed a Layer-by-layer solve, the first detailed description of the method was the one invented by [[David Singmaster]]. He published it (along with his [[3x3x3 notation]]) in his <i>Notes on Rubik's 'Magic Cube'</i> in 1979. During the 1980s cube craze Layer-by-layer was rivalled by [[Corners First]] methods in popularity. At the [[World Rubik's Cube Championship 1982]] only four out of the nineteen competitors used methods based on Layer-by-layer, although these included [[Guus Razoux Schultz]] ([[CFCE]] method), and [[Jessica Fridrich]] (who did [[CFOP]] without F2L). Since speedcubing revived in the late-1990s, the Layer-by-layer approach has dominated both beginner solutions (where it is often called '''the beginner's method'''), and speedcubing (especially [[CFOP]]).
  
{{Method Header
+
==Methods ==
|listofsteps=([[Daisy]] ->) [[Cross]] -> [[Corners XG]] -> [[Std LBL edges]] -> [[4-Look Last Layer]]
+
There are many 3x3x3 methods that fully or partially use a LBL approach, including [[CFOP]], the method used by most top speedcubers in the world. Three examples of how cubers might approach LBL: 
|description=[[The Beginner Method]] is a [[3x3 beginner method]].
 
}}
 
  
At this stage the novice cuber truly completes each layer one after the other, using few algorithms but taking perhaps over 100 moves.
+
===Beginner 3x3x3 LBL===
  
{{Main Article|Article=The Beginner Method}}
+
With this method, the novice cuber truly completes each layer one after the other, using few algorithms (but taking perhaps over 100 moves). This is one of the most popular beginners' methods in existence.
  
 
* ( [[Daisy]] )
 
* ( [[Daisy]] )
* [[Cross]]
+
* Bottom layer: [[Corners XG]] ([[Cross]] plus Corners)
* Bottom layer [[corners]]
+
* Middle Layer:  Insert the 4 middle layer edges (each edge is inserted individually)
* Middle Layer [[edges]]
 
 
* [[4-Look Last Layer]], sometimes actually more like 8-looks by re-using algorithms
 
* [[4-Look Last Layer]], sometimes actually more like 8-looks by re-using algorithms
  
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As if you are solving the 3x3 using the Layer-By-Layer method.
 
As if you are solving the 3x3 using the Layer-By-Layer method.
  
Done the bottom layer first, then [[OLL (2x2x2)]], and last [[CLL (2x2x2)]].
+
Do the bottom layer first, then [[OLL (2x2x2)]], and last [[PLL (2x2x2)]].
 
 
 
 
 
__NOTOC__
 
__NOTOC__
 
<br clear="right">
 
<br clear="right">
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* [[PLL]] (3x3x3)
 
* [[PLL]] (3x3x3)
 
* [[OLL (2x2x2)]]
 
* [[OLL (2x2x2)]]
* [[CLL (2x2x2)]]
+
* [[PLL (2x2x2)]]
 
* [[Layer]]
 
* [[Layer]]
 
* [[First Layer]]
 
* [[First Layer]]
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* [http://www.rubiksplace.com Beginners solution with animations] Excellent tutorial at www.rubiksplace.com
 
* [http://www.rubiksplace.com Beginners solution with animations] Excellent tutorial at www.rubiksplace.com
 
* [http://rubikscube.info/beginner.php rubikscube.info Beginner LBL for the 2x2x2]
 
* [http://rubikscube.info/beginner.php rubikscube.info Beginner LBL for the 2x2x2]
 
+
* [https://www.speedcubingtips.eu/methodes-de-resolution/methode-simple/ 3x3x3 LBL tutorial in French by speedcubingtips.eu]
 +
* [https://www.speedcubingtips.eu/methodes-de-resolution/methode-simple-2x2x2-pocket-cube/ 2x2x2 LBL tutorial in French by speedcubingtips.eu]
  
 
===Video tutorials===
 
===Video tutorials===
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* [http://www.youtube.com/watch?v=HsQIoPyfQzM Dan Brown's Beginner Method] combines corner orientation/permutation into one step making the solve a little easier, but much slower and more difficult to transition to Fridrich (video)
 
* [http://www.youtube.com/watch?v=HsQIoPyfQzM Dan Brown's Beginner Method] combines corner orientation/permutation into one step making the solve a little easier, but much slower and more difficult to transition to Fridrich (video)
  
 
+
[[Category:2x2x2 methods]]
 
[[Category:2x2x2 beginner methods]]
 
[[Category:2x2x2 beginner methods]]
[[Category:3x3x3 beginner methods]]
+
[[Category:3x3x3 beginner methods and substeps]]
 
[[Category:2x2x2 speedsolving methods]]
 
[[Category:2x2x2 speedsolving methods]]
 
[[Category:3x3x3 speedsolving methods]]
 
[[Category:3x3x3 speedsolving methods]]
 
[[Category:3x3x3 Layers methods]]
 
[[Category:3x3x3 Layers methods]]
 +
[[Category:3x3x3 methods]]

Revision as of 09:23, 6 September 2020

3x3x3 LBL Method

LBL (3x3x3) method
Layer by layer.gif
Information about the method
Proposer(s): David Singmaster and others
Proposed: 1970s
Alt Names: Beginner's method, Samsara method
Variants: CFOP, 8355
No. Steps: 5+
No. Algs: 6+
Avg Moves: 80+
Purpose(s):


Layer-By-Layer, or normally only LBL is a group of methods that solves the cube in layers. In the basic, beginner LBL method, the solver finishes the layers one at a time: the first layer edges, then corners, then the second layer edges, and finally the last layer. This is a common method for new cubers to discover on their own. In more advanced LBL methods, you solve layers more efficiently or solve two layers at once. For example, in the CFOP method, one solves the first two layers simultaneously by forming a cross of the first layer edges, and then filling in four pairs of a corner and an edge into the so-called slots.

History

Although it is not known who first performed a Layer-by-layer solve, the first detailed description of the method was the one invented by David Singmaster. He published it (along with his 3x3x3 notation) in his Notes on Rubik's 'Magic Cube' in 1979. During the 1980s cube craze Layer-by-layer was rivalled by Corners First methods in popularity. At the World Rubik's Cube Championship 1982 only four out of the nineteen competitors used methods based on Layer-by-layer, although these included Guus Razoux Schultz (CFCE method), and Jessica Fridrich (who did CFOP without F2L). Since speedcubing revived in the late-1990s, the Layer-by-layer approach has dominated both beginner solutions (where it is often called the beginner's method), and speedcubing (especially CFOP).

Methods

There are many 3x3x3 methods that fully or partially use a LBL approach, including CFOP, the method used by most top speedcubers in the world. Three examples of how cubers might approach LBL:

Beginner 3x3x3 LBL

With this method, the novice cuber truly completes each layer one after the other, using few algorithms (but taking perhaps over 100 moves). This is one of the most popular beginners' methods in existence.

  • ( Daisy )
  • Bottom layer: Corners XG (Cross plus Corners)
  • Middle Layer: Insert the 4 middle layer edges (each edge is inserted individually)
  • 4-Look Last Layer, sometimes actually more like 8-looks by re-using algorithms

Intermediate 3x3x3 LBL

At this stage the cuber may develop strategies such as keyhole to reduce middle layer moves, as well as learning further last layer algorithms.

Advanced 3x3x3 LBL

The advanced LBL cuber often uses CFOP, employing fast, intuitive F2L techniques and learning many more last layer algorithms to reduce moves and improve speed further.

2x2x2 LBL Method

LBL (2x2x2) method
Lbl.gif
Information about the method
Proposer(s): none
Proposed: 1970s
Alt Names: none
Variants: CLL
No. Steps: 3
No. Algs: 3+
Avg Moves: 25+
Purpose(s):


As if you are solving the 3x3 using the Layer-By-Layer method.

Do the bottom layer first, then OLL (2x2x2), and last PLL (2x2x2).


See also

External links

Web pages

Video tutorials