Speedsolving.com Wiki - User contributions [en]

Petrus-W

2020-02-08T17:42:56Z

WarriorCatCuber: /* Pros */

{{Method Infobox
|name=Petrus-W
|image=
|proposers=WarriorCatCuber
|year=2020
|algs=1-58 (for the last layer corners and last 5 edges)
|anames
|variants=[[Petrus]]
|steps=6
|moves=47
|purpose=
* [[Speedsolving]]
* [[Fewest Moves]]
}}
The '''Petrus-W Method''' is a method for solving the [[3x3x3 cube]] invented by WarriorCatCuber in 2020. The method is a variant on the [[Petrus]] method and is efficient enough to be used for advanced speedsolving.

==Steps==
The steps are as follows:
# '''2x2:''' Solve a [[2x2x2 block]] in the back of the cube
# '''2x2x3:''' Expand the [[2x2x2 block]] into a [[2x2x3 block]], also on the back of the cube
# '''EO:''' Fix the misoriented edges on the cube with [[ZZ Method|ZZ]]-style [[EO]] (Edges oriented relative to where it belongs on the U, F, and D layers)
# '''L2P:''' Solve the final two [[Pair|corner-edge pairs]] while only using R, U and L moves to preserve [[EO]]. This leaves only the [[last layer]] and the Down-Front edge piece to be solved
# '''COLL:''' Solve the remaining 4 corners using [[COLL]]
# '''L5EP:''' Permute the final five edges with [[L5EP]] as in [[Portico]]

==Pros==
* Very few cube rotations are required; if you are able to plan your [[2x2x3 Block|2x2x3]] in inspection, the number drops to zero
* EO is more free than in [[Petrus Method|Petrus]]
* L2P has less regrips than in [[Petrus]] [[F2L]]
* Unlike in [[Petrus]] or [[ZZ]], one has the ability to work with the empty DF edge during L2P
* You can orient 4 edges at a time, instead of being restricted to 2 at a time as in basic [[Petrus]]

==Cons==
* Just like [[Petrus Method|Petrus]], you cannot look into EO during inspection time
* L5EP has slightly more algorithms than EPLL
* Unlike in [[Petrus Method|Petrus]] or [[ZZ Method|ZZ]], you cannot easily solve the [[last layer]] in one look
==History==
Petrus-W was originally proposed on the [[SpeedSolving Forums]] by user WarriorCatCuber on February 6, 2020. According to the creator, the idea came from a misinterpretation of another user's critique of a solve with the [[Petrus Method]]. After some thought and improvement, WarriorCatCuber decided to show the other [[SpeedSolving Forums|forum]] users his new idea.

== See also ==
* [[Petrus Method]]
* [[ZZ Method]]
* [[Portico|Portico Method]]
* [[COLL]]

== External links ==
*[https://www.speedsolving.com/threads/the-new-method-substep-concept-idea-thread.40975/page-282#post-1348617/ Original proposal]
*[https://docs.google.com/spreadsheets/d/1UfRh2qMzYRK5TmnN33lrkOtbI818hVltHLPpQs1wqQA/edit#gid=519357026/ L6EP document containing L5EP algorithms]

[[Category:3x3x3 methods]]
[[Category:3x3x3 speedsolving methods]]
[[Category:Fewest Moves Methods]]

Petrus-W

2020-02-07T22:42:25Z

WarriorCatCuber:

{{Method Infobox
|name=Petrus-W
|image=
|proposers=WarriorCatCuber
|year=2020
|algs=1-58 (for the last layer corners and last 5 edges)
|anames
|variants=[[Petrus]]
|steps=6
|moves=47
|purpose=
* [[Speedsolving]]
* [[Fewest Moves]]
}}
The '''Petrus-W Method''' is a method for solving the [[3x3x3 cube]] invented by WarriorCatCuber in 2020. The method is a variant on the [[Petrus]] method and is efficient enough to be used for advanced speedsolving.

==Steps==
The steps are as follows:
# '''2x2:''' Solve a [[2x2x2 block]] in the back of the cube
# '''2x2x3:''' Expand the [[2x2x2 block]] into a [[2x2x3 block]], also on the back of the cube
# '''EO:''' Fix the misoriented edges on the cube with [[ZZ Method|ZZ]]-style [[EO]] (Edges oriented relative to where it belongs on the U, F, and D layers)
# '''L2P:''' Solve the final two [[Pair|corner-edge pairs]] while only using R, U and L moves to preserve [[EO]]. This leaves only the [[last layer]] and the Down-Front edge piece to be solved
# '''COLL:''' Solve the remaining 4 corners using [[COLL]]
# '''L5EP:''' Permute the final five edges with [[L5EP]] as in [[Portico]]

==Pros==
* Very few cube rotations are required; if you are able to plan your [[2x2x3 Block|2x2x3]] in inspection, the number drops to zero
* You can orient 4 edges at a time, instead of being restricted to 2 at a time as in [[Petrus]]
* EO is more free than in [[Petrus Method|Petrus]] or [[ZZ Method|ZZ]]
* L2P has less regrips than in [[Petrus]] [[F2L]]

==Cons==
* Just like [[Petrus Method|Petrus]], you cannot look into EO during inspection time
* L5EP has slightly more algorithms than EPLL
* Unlike in [[Petrus Method|Petrus]] or [[ZZ Method|ZZ]], you cannot easily solve the [[last layer]] in one look
==History==
Petrus-W was originally proposed on the [[SpeedSolving Forums]] by user WarriorCatCuber on February 6, 2020. According to the creator, the idea came from a misinterpretation of another user's critique of a solve with the [[Petrus Method]]. After some thought and improvement, WarriorCatCuber decided to show the other [[SpeedSolving Forums|forum]] users his new idea.

== See also ==
* [[Petrus Method]]
* [[ZZ Method]]
* [[Portico|Portico Method]]
* [[COLL]]

== External links ==
*[https://www.speedsolving.com/threads/the-new-method-substep-concept-idea-thread.40975/page-282#post-1348617/ Original proposal]
*[https://docs.google.com/spreadsheets/d/1UfRh2qMzYRK5TmnN33lrkOtbI818hVltHLPpQs1wqQA/edit#gid=519357026/ L6EP document containing L5EP algorithms]

[[Category:3x3x3 methods]]
[[Category:3x3x3 speedsolving methods]]
[[Category:Fewest Moves Methods]]

Petrus-W

2020-02-07T22:07:12Z

WarriorCatCuber: /* External links */

{{Method Infobox
|name=Petrus-W
|image=
|proposers=WarriorCatCuber
|year=2020
|algs=1-58 (for the last layer corners and last 5 edges)
|anames
|variants=[[Petrus]]
|steps=6
|moves=47
|purpose=
* [[Speedsolving]]
* [[Fewest Moves]]
}}
The '''Petrus-W Method''' is a method for solving the [[3x3x3 cube]] invented by WarriorCatCuber in 2020. The method is a variant on the [[Petrus]] method and is efficient enough to be used for advanced speedsolving.

==Steps==
The steps are as follows:
# '''2x2:''' Solve a [[2x2x2 block]] in the back of the cube
# '''2x2x3:''' Expand the [[2x2x2 block]] into a [[2x2x3 block]], also on the back of the cube
# '''EO:'' Fix the misoriented edges on the cube with [[ZZ Method|ZZ]]-style [[EO]] (Edges oriented relative to where it belongs on the U, F, and D layers)
# '''L2P:''' Solve the final two [[Pair|corner-edge pairs]] while only using R, U and L moves to preserve [[EO]]. This leaves only the [[last layer]] and the Down-Front edge piece to be solved
# '''COLL:''' Solve the remaining 4 corners using [[COLL]]
# '''L5EP:''' Permute the final five edges with [[L5EP]] as in [[Portico]]

==Pros==
* Very few cube rotations are required; if you are able to plan your [[2x2x3 Block|2x2x3]] in inspection, the number drops to zero
* You can orient 4 edges at a time, instead of being restricted to 2 at a time as in [[Petrus]]
* EO is more free than in [[Petrus Method|Petrus]] or [[ZZ Method|ZZ]]
* L2P has less regrips than in [[Petrus]] [[F2L]]

==Cons==
* Just like [[Petrus Method|Petrus]], you cannot look into EO during inspection time
* L5EP has slightly more algorithms than EPLL
* Unlike in [[Petrus Method|Petrus]] or [[ZZ Method|ZZ]], you cannot easily solve the [[last layer]] in one look
==History==
Petrus-W was originally proposed on the [[SpeedSolving Forums]] by user WarriorCatCuber on February 6, 2020. According to the creator, the idea came from a misinterpretation of another user's critique of a solve with the [[Petrus Method]]. After some thought and improvement, WarriorCatCuber decided to show the other [[SpeedSolving Forums|forum]] users his new idea.

== See also ==
* [[Petrus Method]]
* [[ZZ Method]]
* [[Portico|Portico Method]]
* [[COLL]]

== External links ==
*[https://www.speedsolving.com/threads/the-new-method-substep-concept-idea-thread.40975/page-282#post-1348617/ Original proposal]
*[https://docs.google.com/spreadsheets/d/1UfRh2qMzYRK5TmnN33lrkOtbI818hVltHLPpQs1wqQA/edit#gid=519357026/ L6EP document containing L5EP algorithms]

[[Category:3x3x3 methods]]
[[Category:3x3x3 speedsolving methods]]
[[Category:Fewest Moves Methods]]

Petrus-W

2020-02-07T19:59:29Z

WarriorCatCuber: /* Steps */

{{Method Infobox
|name=Petrus-W
|image=
|proposers=WarriorCatCuber
|year=2020
|algs=1-58 (for the last layer corners and last 5 edges)
|anames
|variants=[[Petrus]]
|steps=6
|moves=47
|purpose=
* [[Speedsolving]]
* [[Fewest Moves]]
}}
The '''Petrus-W Method''' is a method for solving the [[3x3x3 cube]] invented by WarriorCatCuber in 2020. The method is a variant on the [[Petrus]] method and is efficient enough to be used for advanced speedsolving.

==Steps==
The steps are as follows:
# 2x2 : Solve a [[2x2x2 block]] in the back of the cube
# 2x2x3 : Expand the [[2x2x2 block]] into a [[2x2x3 block]], also on the back of the cube
# EO : Fix the misoriented edges on the cube with [[ZZ Method|ZZ]]-style [[EO]] (Edges oriented relative to where it belongs on the U, F, and D layers)
# L2P : Solve the final two [[Pair|corner-edge pairs]] while only using R, U and L moves to preserve [[EO]]. This leaves the [[last layer]] and the Down-Front edge piece to be solved
# COLL : Solve the remaining 4 corners using [[COLL]]
# L5EP : Permute the final five edges with [[L5EP]] as in [[Portico]]

==Pros==
# If you can look into the 2x2x3 block in inspection, no cube rotations are required
# You can orient 4 edges at a time, instead of being restricted to the 2 allowed in [[Petrus]]
# You can use M' U' M to orient edges unlike in [[Petrus]] or [[ZZ]]
# L2P has less regrips than in [[Petrus]] [[F2L]]
# During L2P, you get to use F2 and M' U2 M, which gives you a lot of freedom.

==Cons==
# Unlike in the [[ZZ]] method, you cannot look into EO during inspection time
# L5EP has 7 more algorithms than EPLL
# Unlike in [[Petrus]] or [[ZZ]], you cannot use [[ZZLL]] or [[ZBLL]] to complete the [[Last Layer]] in one look
==History==
Petrus-W was originally proposed on the [[SpeedSolving Forums]] by user WarriorCatCuber on February 6, 2020. According to the creator, the idea came from a misinterpretation of another user's critique of a solve with the [[Petrus Method]]. After some thought and improvement, WarriorCatCuber decided to show the other [[SpeedSolving Forums|forum]] users his new idea.

== See also ==
* [[Petrus Method]]
* [[ZZ Method]]
* [[Portico|Portico Method]]
* [[COLL]]

== External links ==
*[https://www.speedsolving.com/threads/the-new-method-substep-concept-idea-thread.40975/page-282#post-1348617/ Original proposal]
*[https://docs.google.com/spreadsheets/d/1UfRh2qMzYRK5TmnN33lrkOtbI818hVltHLPpQs1wqQA/edit#gid=519357026/ L6EP document containing L5EP algorithms]
*[https://docs.google.com/spreadsheets/d/1UfRh2qMzYRK5TmnN33lrkOtbI818hVltHLPpQs1wqQA/edit#gid=519357026/ L6EP document containing L5EP algorithms]

[[Category:3x3x3 methods]]
[[Category:3x3x3 speedsolving methods]]
[[Category:Fewest Moves Methods]]

Petrus-W

2020-02-07T19:58:43Z

WarriorCatCuber: /* Pros */

{{Method Infobox
|name=Petrus-W
|image=
|proposers=WarriorCatCuber
|year=2020
|algs=1-58 (for the last layer corners and last 5 edges)
|anames
|variants=[[Petrus]]
|steps=6
|moves=47
|purpose=
* [[Speedsolving]]
* [[Fewest Moves]]
}}
The '''Petrus-W Method''' is a method for solving the [[3x3x3 cube]] invented by WarriorCatCuber in 2020. The method is a variant on the [[Petrus]] method and is efficient enough to be used for advanced speedsolving.

==Steps==
The steps are as follows:
# Solve a [[2x2x2 block]] in the back of the cube
# Expand the [[2x2x2 block]] into a [[2x2x3 block]], also on the back of the cube
# Fix the misoriented edges on the cube with [[ZZ Method|ZZ]]-style [[EO]] (Edges oriented relative to where it belongs on the U, F, and D layers)
# Solve the final two [[Pair|corner-edge pairs]] while only using R, U and L moves to preserve [[EO]]. This leaves the [[last layer]] and the Down-Front edge piece to be solved
# Solve the remaining 4 corners using [[COLL]]
# Permute the final five edges with [[L5EP]] as in [[Portico]]

==Pros==
# If you can look into the 2x2x3 block in inspection, no cube rotations are required
# You can orient 4 edges at a time, instead of being restricted to the 2 allowed in [[Petrus]]
# You can use M' U' M to orient edges unlike in [[Petrus]] or [[ZZ]]
# L2P has less regrips than in [[Petrus]] [[F2L]]
# During L2P, you get to use F2 and M' U2 M, which gives you a lot of freedom.

==Cons==
# Unlike in the [[ZZ]] method, you cannot look into EO during inspection time
# L5EP has 7 more algorithms than EPLL
# Unlike in [[Petrus]] or [[ZZ]], you cannot use [[ZZLL]] or [[ZBLL]] to complete the [[Last Layer]] in one look
==History==
Petrus-W was originally proposed on the [[SpeedSolving Forums]] by user WarriorCatCuber on February 6, 2020. According to the creator, the idea came from a misinterpretation of another user's critique of a solve with the [[Petrus Method]]. After some thought and improvement, WarriorCatCuber decided to show the other [[SpeedSolving Forums|forum]] users his new idea.

== See also ==
* [[Petrus Method]]
* [[ZZ Method]]
* [[Portico|Portico Method]]
* [[COLL]]

== External links ==
*[https://www.speedsolving.com/threads/the-new-method-substep-concept-idea-thread.40975/page-282#post-1348617/ Original proposal]
*[https://docs.google.com/spreadsheets/d/1UfRh2qMzYRK5TmnN33lrkOtbI818hVltHLPpQs1wqQA/edit#gid=519357026/ L6EP document containing L5EP algorithms]
*[https://docs.google.com/spreadsheets/d/1UfRh2qMzYRK5TmnN33lrkOtbI818hVltHLPpQs1wqQA/edit#gid=519357026/ L6EP document containing L5EP algorithms]

[[Category:3x3x3 methods]]
[[Category:3x3x3 speedsolving methods]]
[[Category:Fewest Moves Methods]]

Petrus-W

2020-02-07T17:36:37Z

WarriorCatCuber:

{{Method Infobox
|name=Petrus-W
|image=
|proposers=WarriorCatCuber
|year=2020
|algs=1-58 (for the last layer corners and last 5 edges)
|anames
|variants=[[Petrus]]
|steps=6
|moves=47
|purpose=
* [[Speedsolving]]
* [[Fewest Moves]]
}}
The '''Petrus-W Method''' is a method for solving the [[3x3x3 cube]] which was invented by WarriorCatCuber in 2020. The method is a variant on the [[Petrus]] method and is efficient enough to be used for advanced speedsolving.

==Steps==
The steps are as follows:
# Solve a [[2x2x2 block]] in the back of the cube
# Expand the [[2x2x2 block]] into a [[2x2x3 block]], also on the back of the cube
# Fix the misoriented edges [[ZZ Method]] style on the cube (Edges oriented relative to where it belongs on the R,U and L layers
# Solve the final two [[Pair|corner-edge pairs]] while only using R, U and L moves to preserve [[EO]]. This leaves the [[last layer]] and the Down-Front edge piece to be solved
# Solve the remaining 4 corners using [[COLL]]
# Permute the final five edges with [[L5EP]] as in [[Portico]]

==Pros==
# If you can look into the 2x2x3 block in inspection, no cube rotations are requires
# You can orient 4 edges at a time, when you have to fix them 2 at a time in [[Petrus]]
# You can use M' U' M to orient edges unlike is [[Petrus]] or [[ZZ]]
# [[F2L]] has less regrips than in [[Petrus]] [[F2L]]

==Cons==
# Unlike in the [[ZZ]] method, you cannot look into EO during inspection time
# L5EP has 7 more algorithms than EPLL
# Unlike in [[Petrus]] or [[ZZ]], you cannot use [[ZZLL]] or [[ZBLL]] to complete the [[Last Layer]] in one look.

== See also ==
* [[Petrus Method]]
* [[ZZ Method]]
* [[Portico]]

== External links ==
*[https://www.speedsolving.com/threads/the-new-method-substep-concept-idea-thread.40975/page-282#post-1348617/ Original proposal]
*[https://docs.google.com/spreadsheets/d/1UfRh2qMzYRK5TmnN33lrkOtbI818hVltHLPpQs1wqQA/edit#gid=519357026/ L6EP document containing L5EP algorithms]

[[Category:3x3x3 methods]]
[[Category:3x3x3 speedsolving methods]]
[[Category:Fewest Moves Methods]]

Petrus-W

2020-02-07T17:34:44Z

WarriorCatCuber:

{{Method Infobox
|name=Petrus-W
|image=
|proposers=WarriorCatCuber
|year=2020
|algs=1-58 (for the last layer corners and last 5 edges)
|anames
|variants=[[Petrus]]
|steps=6
|moves=47
|purpose=
* [[Speedsolving]]
* [[Fewest Moves]]
}}
The '''Petrus-W Method''' is a method for solving the [[3x3x3 cube]] which was invented by WarriorCatCuber in 2020. The method is a variant on the [[Petrus]] method and is efficient enough to be used for advanced speedsolving.

==Steps==
The steps are as follows:
# Solve a [[2x2x2 block]] in the back of the cube
# Expand the [[2x2x2 block]] into a [[2x2x3 block]], also on the back of the cube
# Fix the misoriented edges [[ZZ Method]] style on the cube (Edges oriented relative to where it belongs on the R,U and L layers
# Solve the final two [[Pair|corner-edge pairs]] while only using R, U and L moves to preserve [[EO]]. This leaves the [[last layer]] and the Down-Front edge piece to be solved
# Solve the remaining 4 corners using [[COLL]]
# Permute the final five edges with [[L5EP]] as in [[Portico]]

==Pros==
# If you can look into the 2x2x3 block in inspection, no cube rotations are requires
# You can orient 4 edges at a time, when you have to fix them 2 at a time in [[Petrus]]
# You can use M' U' M to orient edges unlike is [[Petrus]] or [[ZZ]]
# [[F2L]] has less regrips than in [[Petrus]] [[F2L]]

==Cons==
# Unlike in the [[ZZ]] method, you cannot look into EO during inspection time
# L5EP has 7 more algorithms than EPLL
# Unlike in [[Petrus]] or [[ZZ]], you cannot use [[ZZLL]] or [[ZBLL]] to complete the [[Last Layer]] in one look.

== See also ==
* [[Petrus Method]]
* [[ZZ Method]]
* [[Portico]]

== External links ==
*[https://www.speedsolving.com/threads/the-new-method-substep-concept-idea-thread.40975/page-282#post-1348617/ Original proposal]
*[https://docs.google.com/spreadsheets/d/1UfRh2qMzYRK5TmnN33lrkOtbI818hVltHLPpQs1wqQA/edit#gid=519357026/ L6EP document containing L5EP algorithms

[[Category:3x3x3 methods]]
[[Category:3x3x3 speedsolving methods]]
[[Category:Fewest Moves Methods]]

Petrus-W

2020-02-07T17:34:10Z

WarriorCatCuber:

{{Method Infobox
|name=Petrus-W
|image=
|proposers=WarriorCatCuber
|year=2020
|algs=1-58 (for the last layer corners and last 5 edges)
|anames
|variants=[[Petrus]]
|steps=6
|moves=47
|purpose=
* [[Speedsolving]]
* [[Fewest Moves]]
}}
The '''Petrus-W Method''' is a method for solving the [[3x3x3 cube]] which was invented by WarriorCatCuber in 2020. The method is a variant on the [[Petrus]] method and is efficient enough to be used for advanced speedsolving.

==Steps==
The steps are as follows:
# Solve a [[2x2x2 block]] in the back of the cube
# Expand the [[2x2x2 block]] into a [[2x2x3 block]], also on the back of the cube
# Fix the misoriented edges [[ZZ Method]] style on the cube (Edges oriented relative to where it belongs on the R,U and L layers
# Solve the final two [[Pair|corner-edge pairs]] while only using R, U and L moves to preserve [[EO]]. This leaves the [[last layer]] and the Down-Front edge piece to be solved
# Solve the remaining 4 corners using [[COLL]]
# Permute the final five edges with [[L5EP]] as in [[Portico]]

==Pros==
# If you can look into the 2x2x3 block in inspection, no cube rotations are requires
# You can orient 4 edges at a time, when you have to fix them 2 at a time in [[Petrus]]
# You can use M' U' M to orient edges unlike is [[Petrus]] or [[ZZ]]
# [[F2L]] has less regrips than in [[Petrus]] [[F2L]]

==Cons==
# Unlike in the [[ZZ]] method, you cannot look into EO during inspection time
# L5EP has 7 more algorithms than EPLL
# Unlike in [[Petrus]] or [[ZZ]], you cannot use [[ZZLL]] or [[ZBLL]] to complete the [[Last Layer]] in one look.

== See also ==
* [[Petrus Method]]
* [[ZZ Method]]
* [[Portico Method]]

== External links ==
*[https://www.speedsolving.com/threads/the-new-method-substep-concept-idea-thread.40975/page-282#post-1348617/ Original proposal]
*[https://docs.google.com/spreadsheets/d/1UfRh2qMzYRK5TmnN33lrkOtbI818hVltHLPpQs1wqQA/edit#gid=519357026/ L6EP document containing L5EP algorithms

[[Category:3x3x3 methods]]
[[Category:3x3x3 speedsolving methods]]
[[Category:Fewest Moves Methods]]

Petrus Method

2020-02-07T17:21:53Z

WarriorCatCuber: /* Petrus variations */

{{Method Infobox
|name=Petrus
|image=Petrus_method.gif
|proposers=[[Lars Petrus]]
|year=1981
|anames
|algs=2 to 493 (for the last layer)
|variants=[[Petrus-W]]
|steps=7
|moves=~50
|purpose=
* [[Fewest Moves]]
* [[Speedsolving]]
}}

{{Method Header
|listofsteps=[[2x2x2 Block]] -> [[2x2x3 Block]] -> [[EO Petrus]] -> [[Petrus F2L]] -> [[LL+EO:CP]] -> [[LL+EO+CP:CO]] -> [[EPLL]]
|description='''Petrus''' was the second most popular speedcubing method behind [[CFOP]].
}}

The '''Petrus Method''', invented by [[Lars Petrus]], is a block-building [[method]] where the [[F2L]] is solved intuitively with no [[algorithm]]s. Petrus was the second most popular speedcubing method behind [[Fridrich]]/[[CFOP]]; however other methods like [[ZZ]] and [[Roux]] are currently more popular.

The Petrus Method is sometimes partially used in [[CFOP]] solves for [[XCross]].

== The Steps ==
The following steps describe an approach suited for beginners, more advanced users might combine steps 1 and 2 and/or 5 and 6 ([[COLL]]) or use a [[Fridrich]] type last layer and do [[OLL]] and then [[PLL]]. If the fifth step is skipped the last layer can be solved with a [[2GLL]] algorithm.

1. Build a [[2x2x2 block]] anywhere on the cube.

2. Expand the [[2x2x2 block]] to a [[2x2x3 block]]; three ways are possible for each initial [[2x2x2 block]] placement.

3. Fix the "bad edges" (in other words, orient the remaining seven edges on the cube that have not been solved).

4. Finish the First Two Layers (F2L) by only turning 2 sides. The pure Petrus approach is to create a 1x2x2 block and expand it to a 1x2x3 block to finish off the F2L, not to solve the cross piece and two corner/edge pairs; two ways are possible. The last-layer edges will orientate themselves automatically.

5. Permute the last-layer corners (put them in their correct places).

6. Orient the last-layer corners, making the whole last layer a solid colour.

7. Permute the last layer edges, without disturbing the other pieces, to solve the cube.

== Pros ==

* The Petrus Method uses fewer moves than the [[Fridrich]] method and most, if not all, other non-block-building methods.
* It is more intuitive than the Fridrich method, and it requires far fewer algorithms.
* It requires fewer algorithms than some beginner methods (including the most popular one: [[Layer By Layer]]).
* If [[COLL]] is used as well, one can orient and permute the corners at the same time.
* The last layer can even be solved in one look with [[ZBLL]] or [[ZZLL]], however this drastically increases the number of algorithms one must learn.

== Cons ==

* It can be sometimes hard (especially for a beginner) to optimize block building, and it's difficult to keep consistently turning throughout the solve.

* Due to the high amount of intuition, it is difficult to optimize finger tricks during the block building stage.

* Recognition in the Edge Orientation step tends to result in long pauses.

== Petrus variations ==

Petrus-W : See [[Petrus-W]]

There are several other [[substep]]s that can be used [[EJLS]], [[WV]], [[COLL]], [[ZZLL]] and [[ZBLL]], which completes the entire last layer in a single algorithm.

== Petrus as a Beginner Method ==

Used as a beginner method, Petrus requires much more intuition, but also involves learning fewer algorithms. For a tutorial, see the external links below.

== External links ==

* [http://lar5.com/cube/ Lars Petrus's tutorial]
* [http://petrus-speed.netne.net/ Petrus Speed Website]
* Speedsolving.com [http://www.speedsolving.com/forum/showthread.php?t=14014 YouTube Beginner Petrus Tutorial]
* YouTube: [http://www.youtube.com/watch?v=EQ9OrFVQw0o Petrus Tutorial] by fallofshadows
* YouTube: [http://www.youtube.com/watch?v=WqXdO2H2FTs Petrus Tutorial] by CuberChris

[[Category:3x3x3 methods]]
[[Category:3x3x3 beginner methods]]
[[Category:3x3x3 speedsolving methods]]
[[Category:Fewest Moves Methods]]

Petrus Method

2020-02-07T17:18:41Z

WarriorCatCuber:

{{Method Infobox
|name=Petrus
|image=Petrus_method.gif
|proposers=[[Lars Petrus]]
|year=1981
|anames
|algs=2 to 493 (for the last layer)
|variants=[[Petrus-W]]
|steps=7
|moves=~50
|purpose=
* [[Fewest Moves]]
* [[Speedsolving]]
}}

{{Method Header
|listofsteps=[[2x2x2 Block]] -> [[2x2x3 Block]] -> [[EO Petrus]] -> [[Petrus F2L]] -> [[LL+EO:CP]] -> [[LL+EO+CP:CO]] -> [[EPLL]]
|description='''Petrus''' was the second most popular speedcubing method behind [[CFOP]].
}}

The '''Petrus Method''', invented by [[Lars Petrus]], is a block-building [[method]] where the [[F2L]] is solved intuitively with no [[algorithm]]s. Petrus was the second most popular speedcubing method behind [[Fridrich]]/[[CFOP]]; however other methods like [[ZZ]] and [[Roux]] are currently more popular.

The Petrus Method is sometimes partially used in [[CFOP]] solves for [[XCross]].

== The Steps ==
The following steps describe an approach suited for beginners, more advanced users might combine steps 1 and 2 and/or 5 and 6 ([[COLL]]) or use a [[Fridrich]] type last layer and do [[OLL]] and then [[PLL]]. If the fifth step is skipped the last layer can be solved with a [[2GLL]] algorithm.

1. Build a [[2x2x2 block]] anywhere on the cube.

2. Expand the [[2x2x2 block]] to a [[2x2x3 block]]; three ways are possible for each initial [[2x2x2 block]] placement.

3. Fix the "bad edges" (in other words, orient the remaining seven edges on the cube that have not been solved).

4. Finish the First Two Layers (F2L) by only turning 2 sides. The pure Petrus approach is to create a 1x2x2 block and expand it to a 1x2x3 block to finish off the F2L, not to solve the cross piece and two corner/edge pairs; two ways are possible. The last-layer edges will orientate themselves automatically.

5. Permute the last-layer corners (put them in their correct places).

6. Orient the last-layer corners, making the whole last layer a solid colour.

7. Permute the last layer edges, without disturbing the other pieces, to solve the cube.

== Pros ==

* The Petrus Method uses fewer moves than the [[Fridrich]] method and most, if not all, other non-block-building methods.
* It is more intuitive than the Fridrich method, and it requires far fewer algorithms.
* It requires fewer algorithms than some beginner methods (including the most popular one: [[Layer By Layer]]).
* If [[COLL]] is used as well, one can orient and permute the corners at the same time.
* The last layer can even be solved in one look with [[ZBLL]] or [[ZZLL]], however this drastically increases the number of algorithms one must learn.

== Cons ==

* It can be sometimes hard (especially for a beginner) to optimize block building, and it's difficult to keep consistently turning throughout the solve.

* Due to the high amount of intuition, it is difficult to optimize finger tricks during the block building stage.

* Recognition in the Edge Orientation step tends to result in long pauses.

== Petrus variations ==

There are several other [[substep]]s that can be used [[EJLS]], [[WV]], [[COLL]], and [[ZBLL]], which completes the entire last layer in a single algorithm.

== Petrus as a Beginner Method ==

Used as a beginner method, Petrus requires much more intuition, but also involves learning fewer algorithms. For a tutorial, see the external links below.

== External links ==

* [http://lar5.com/cube/ Lars Petrus's tutorial]
* [http://petrus-speed.netne.net/ Petrus Speed Website]
* Speedsolving.com [http://www.speedsolving.com/forum/showthread.php?t=14014 YouTube Beginner Petrus Tutorial]
* YouTube: [http://www.youtube.com/watch?v=EQ9OrFVQw0o Petrus Tutorial] by fallofshadows
* YouTube: [http://www.youtube.com/watch?v=WqXdO2H2FTs Petrus Tutorial] by CuberChris

[[Category:3x3x3 methods]]
[[Category:3x3x3 beginner methods]]
[[Category:3x3x3 speedsolving methods]]
[[Category:Fewest Moves Methods]]

Petrus-W

2020-02-07T17:17:44Z

WarriorCatCuber:

Petrus-W

2020-02-07T17:17:06Z

WarriorCatCuber: /* Steps */