Difference between revisions of "Layer by layer"

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== 3x3x3 LBL Method ==
 
{{Method Infobox
 
{{Method Infobox
 
|name=LBL (3x3x3)
 
|name=LBL (3x3x3)
 
|image=Layer_by_layer.gif
 
|image=Layer_by_layer.gif
|proposers=none
+
|proposers=[[David Singmaster]] and others
|year=1980s
+
|year=1970s
|anames
+
|anames=Beginner's method, Samsara method
 
|variants=[[CFOP]], [[8355]]
 
|variants=[[CFOP]], [[8355]]
 
|steps=5+
 
|steps=5+
|algs=6 to 16 (depending on [[LL]])
+
|algs=6+
|moves
+
|moves=80+
 
|purpose=<sup></sup>
 
|purpose=<sup></sup>
* [[Beginner Method]]
+
* [[Beginner method]]
 
* [[Speedsolving]]
 
* [[Speedsolving]]
 
}}
 
}}
'''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's edges; and finally the [[last layer]]. This is the most common method for new cubers to discover on their own. More advanced LBL methods solve layers more efficiently or solve two layers at once: for example, the [[Fridrich method]] solves the [[first two layers]] simultaneously, by forming a [[cross]] of the first layer's [[edge]]s and then filling in four [[pair]]s of a [[corner]] and an [[edge]] into the so-called [[slot]]s.
 
  
__NOTOC__
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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.
<br clear="right">
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== 3x3x3 LBL Method ==
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==History==
Also known as LBL. Solves the cube in layers: First the bottom layer, then the middle layer, and finally the top layer or [[LL]]. As a slight advancement to basic Layer By Layer, the [[Keyhole]] method can be used to enable solving of the middle layer in fewer moves.
+
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]]).
 +
 
 +
==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.
 +
 
 +
* [[Cross]]
 +
* [[Keyhole]] F2L
 +
* [[4-Look Last Layer]]
 +
 
 +
===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.  
 +
* [[Cross]]
 +
* [[F2L]]
 +
* [[OLL]]
 +
* [[PLL]]
  
 
== 2x2x2 LBL Method ==
 
== 2x2x2 LBL Method ==
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|image=Lbl.gif
 
|image=Lbl.gif
 
|proposers=none
 
|proposers=none
|year=1980's
+
|year=1970s
 
|anames
 
|anames
 
|variants=[[CLL]]
 
|variants=[[CLL]]
 
|steps=3
 
|steps=3
|algs=2 to 9 (depending on [[LL]])
+
|algs=3+
|moves
+
|moves=25+
 
|purpose=<sup></sup>
 
|purpose=<sup></sup>
 
* [[Beginner Method]]
 
* [[Beginner Method]]
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}}
 
}}
  
Done as if solving the 3x3 corners using the Layer-By-Layer method. Shorter last layer algs may be used since there are no edges to be keped in position on a 2x2. There are two options for the last layer in a beginner 2x2 solve:
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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)]].
  
* Orientation followed by Permutation
 
* Permutation followed by Orientation
 
  
==See Also==
+
__NOTOC__
 +
<br clear="right">
  
* [[OLL]]
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==See also==
* [[PLL]]
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* [[OLL]] (3x3x3)
 +
* [[PLL]] (3x3x3)
 
* [[OLL (2x2x2)]]
 
* [[OLL (2x2x2)]]
 +
* [[PLL (2x2x2)]]
 
* [[Layer]]
 
* [[Layer]]
 
* [[First Layer]]
 
* [[First Layer]]
Line 51: Line 80:
 
* [[4-Look Last Layer]]
 
* [[4-Look Last Layer]]
  
== External Links ==
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== External links ==
* YouTube: [http://www.youtube.com/user/CubeRight#p/u/8/VVrOmmKnVjo CubeRight's] excellent (HD) beginner tutorial. Easy transition to Fridrich method.
+
 
* YouTube: [http://www.youtube.com/watch?v=609nhVzg-5Q Badmephiosto's Beginners Tutorial] excellent quality tutorial. Method designed for easy transition to Fridrich
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===Web pages===
* YouTube: [http://ca.youtube.com/watch?v=ofZFUgaxlTQ Badmephisto's OLD Beginners Tutorial] .. the outdated version.
+
 
* YouTube: [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
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* [https://www.rubiks.com/blog/how-to-solve-the-rubiks-cube How to solve the Rubik's cube] The official beginner's guide on rubiks.com
* [http://www.monkeysee.com/play/1113-solve-rubik-s-cube Bob Burton's Tutorial] (video)
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* [http://peter.stillhq.com/jasmine/rubikscubesolution.html Jasmine Lee's Beginner Solution] Excellent beginner's solution, more concise than the rubiks.com version.
* [http://www.rubiks.com/Academy/Tyson%20Video.aspx Tyson Mao's video tutorial on rubiks.com] (video)
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* [http://www.kungfoomanchu.com/guides/andy-klise-3x3x3-beginners-guide.pdf Andy Klise's beginner's guide] (pdf) A "cheat sheet" summary version of Jasmine Lee's page, with less explanation.
* [http://www.stanford.edu/~leyanlo/cube_solution.pdf Leyan's guide for beginners] '''(PDF)'''
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* [http://www.rubiksplace.com Beginners solution with animations] Excellent tutorial at www.rubiksplace.com
* [http://peter.stillhq.com/jasmine/rubikscubesolution.html Jasmine Lee's Beginner Solution]
 
* [http://erikku.110mb.com/beginner.html Arnaud van Galen's beginners method explained by Erik Akkersdijk]
 
 
* [http://rubikscube.info/beginner.php rubikscube.info Beginner LBL for the 2x2x2]
 
* [http://rubikscube.info/beginner.php rubikscube.info Beginner LBL for the 2x2x2]
* [http://joshtime.com/cubing/beginners-method/ JoshTime's Multiple Page LBL Beginner's Method Explanation]
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* [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===
 +
 
 +
* [http://www.rubiks.com/Academy/Tyson%20Video.aspx Tyson Mao's tutorial on rubiks.com]
 +
* [http://www.youtube.com/user/CubeRight#p/u/8/VVrOmmKnVjo CubeRight's Beginners Tutorial (HD)] Excellent tutorial, easy transition to Fridrich method.
 +
* [http://www.youtube.com/watch?v=609nhVzg-5Q Badmephiosto's Beginners Tutorial] Quality tutorial, also designed for easy transition to Fridrich method  
 +
* [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:Methods]]
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[[Category:2x2x2]]
[[Category: 2x2x2 Beginner Methods]]
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[[Category:2x2x2 methods]]
[[Category: 3x3x3 Beginner Methods]]
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[[Category:2x2x2 beginner methods]]
[[Category: 2x2x2 Speedsolving Methods]]
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[[Category:3x3x3 beginner methods]]
[[Category: 3x3x3 Speedsolving Methods]]
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[[Category:2x2x2 speedsolving methods]]
 +
[[Category:3x3x3 speedsolving methods]]
 +
[[Category:3x3x3 Layers methods]]

Revision as of 20:26, 19 July 2019

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