Difference between revisions of "LSE"

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'''Last Six Edges''', abbrevaited '''LSE''' or '''L6E''', is the last [[step]] of the [[Roux Method]].
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{{Substep Infobox
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|name=LSE
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|image=Roux_method.gif
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|proposers=[[Gilles Roux/old_revision|Gilles Roux]]
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|year=2003
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|anames=Last Six Edges, L6E
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|variants=[[ELL]], [[L5E]], [[L7E]]
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|subgroup=
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|algs=0 (intuitive)
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|moves= 11.1 STM (optimal)
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|purpose=<sup></sup>
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* [[Speedsolving]]
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|previous=[[6 Edges missing UM cube state]]
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|next=[[Solved cube state]]
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}}
  
{{stub}}
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'''LSE''', also called '''L6E''', short for '''Last Six Edges''', is a possible last [[step]] in 3x3 speedsolving that solves the M-slice centers and edges (UF, UB, DF, DB) together with UL and UR edges. It is the last step of the [[Roux Method]] and the [[Ortega Method]].
  
[[Category:Methods]]
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== Possible approaches ==
[[Category:3x3x3 Methods]]
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LSE can be solved in various ways; [[Gilles Roux/old_revision|Gilles Roux]] himself, the inventer of the Roux Method, advocates a flexible/semi-intuitive approach to LSE without a strict division into substeps. The optimal approach is likely a combination of the approaches below.
[[Category:Last Layer Methods]]
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[[Category:Cubing Terminology]]
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'''Layers-based approach'''
[[Category:Sub Steps]]
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* 1. centers, BD, and FD
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* 2. [[ELL]]
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This layer-based approach seems out of place in any method ending with LSE.
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'''Original Roux'''
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* 1. Orient centers and edges
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* 2. Permute UR and UL edges
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* 3. Permute the M slice
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The following two approaches are commonly used in [[Corners first]] methods.
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'''Corners First approach 1'''
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* 1. Solve UL or UR
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* 2. Insert UL/UR while orienting the M slice
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* 3. Permute the M slice
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'''Corners First approach 2'''
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* 1. Solve both UL and UR
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* 2. Orient and permute the M slice
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Reduction to L5E has been proposed as an experimental approach.
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'''L5E'''
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* 1. Centers and BD
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* 2. [[L5E]]
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'''Orientation+Permutation'''
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* 1. Orient all edges
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* 2. Permute all edges with [[L6EP]]
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== External links ==
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* [http://grrroux.free.fr/method/Step_4.html Standard Method]
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* [http://rubikscube.info/lastsix2look.html 2.5 Look]
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* [http://www.speedsolving.com/forum/showthread.php?37658-Roux-method-An-alternate-way-of-solving-the-last-6-edges&p=760583&viewfull=1#post760583 Robert Yau's Alternative]
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* [http://www.speedsolving.com/forum/showthread.php?9095-Playing-With-Roux-Orientations UL/UR to DF/DB Method]
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* [http://www.speedsolving.com/forum/showthread.php?23916-2-step-finish-for-Roux-Edges Two Step Method]
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* [http://www.speedsolving.com/forum/showthread.php?35350-Roux-4b-to-4c-Transition Roux 4b-4c Transition]
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* [https://www.speedcubingtips.eu/lse-eo-last-6-edges-edges-orientation/ speedcubingtips.eu LSE page]
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* [https://www.speedcubingtips.eu/2019/07/22/lse-eolr-methode-roux/ speedcubingtips.eu LSE-EOLR page]
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[[Category:3x3x3 other substeps]]

Revision as of 06:30, 20 May 2020

LSE
Roux method.gif
Information
Proposer(s): Gilles Roux
Proposed: 2003
Alt Names: Last Six Edges, L6E
Variants: ELL, L5E, L7E
Subgroup:
No. Algs: 0 (intuitive)
Avg Moves: 11.1 STM (optimal)
Purpose(s):


LSE, also called L6E, short for Last Six Edges, is a possible last step in 3x3 speedsolving that solves the M-slice centers and edges (UF, UB, DF, DB) together with UL and UR edges. It is the last step of the Roux Method and the Ortega Method.

Possible approaches

LSE can be solved in various ways; Gilles Roux himself, the inventer of the Roux Method, advocates a flexible/semi-intuitive approach to LSE without a strict division into substeps. The optimal approach is likely a combination of the approaches below.

Layers-based approach

  • 1. centers, BD, and FD
  • 2. ELL

This layer-based approach seems out of place in any method ending with LSE.

Original Roux

  • 1. Orient centers and edges
  • 2. Permute UR and UL edges
  • 3. Permute the M slice

The following two approaches are commonly used in Corners first methods.

Corners First approach 1

  • 1. Solve UL or UR
  • 2. Insert UL/UR while orienting the M slice
  • 3. Permute the M slice

Corners First approach 2

  • 1. Solve both UL and UR
  • 2. Orient and permute the M slice

Reduction to L5E has been proposed as an experimental approach.

L5E

  • 1. Centers and BD
  • 2. L5E

Orientation+Permutation

  • 1. Orient all edges
  • 2. Permute all edges with L6EP

External links