Speedsolving.com Wiki - User contributions [en]

Reduction Method

2012-01-08T23:46:09Z

Swedishcuber:

'''Reduction''' is a prevalent [[method]] for solving [[big cube]]s, which involves solving [[Center|centers]] and assembling [[Edge|edges]] so that the cube is "reduced" to a [[3x3x3]] puzzle. Most recent official records and fastest times on the [[4x4x4]] and have been set by speedsolvers using reduction.
Almost everyone uses reduction for 5x5 and bigger cubes.
The fastest official times on the [[5x5x5]] [[6x6x6]] and [[7x7x7]] cubes have also been set on reduction. Others methods such as [[Cage Method|Cage]] have been used to attain fast times on very large cube [[Simulator|cube simulators]] (on very big cubes there are almost only centers to solve and most time is spent looking for them so the method used does not matter that much).

The idea of reduction is applicable to other puzzles, where it may be easier to manipulate a puzzle so it functions as a simpler sub-puzzle. In most cases, reduction is used to simplify the puzzle by grouping pieces first, instead of directly solving pieces into their correct positions.

The idea of reduction can sometimes be formalized as effectively as placing a puzzle into a smaller subgroup. [[Thistlethwaite's Algorithm|Thistlethwaite's algorithm]] was based on several iterative reductions, and most fast computer solvers essentially use those approaches.

Although most solving methods involve steps that reduce the left-over puzzle portion, simply solving the puzzle into "less of a mess" (such as "reducing" a cube to the [[Last Layer|LL]] with [[Petrus]]) is not commonly considered reduction. The term is more applied to solving a puzzle into a differently interpretable puzzle, which is normally solved without resort to treating it like the original puzzle (with notable exceptions, such as [[Parity]]).

== External Links ==
* [http://www.bigcubes.com bigcubes.com Tutorial]

[[Category:Methods]]
[[Category:Big Cube Methods]]
[[Category:Cubing Terminology]]

Talk:Reduction Method

2012-01-08T23:43:04Z

Swedishcuber: /* Methods other than reduction for 5x5 and up */ new section

When I was looking ad my "direct solving" method I found I do, direct solve but also in portions reduce and solve as a 3x3x3. For F2B I first pair up the edge and then I solve the pair = pure reduction. In the end I do ELL using commutators on single edges = pure direct solving.

But in the middle part I pair up 2 centres and make a pair with an edge that I solve...

Looks exaclty like the reduction pair I did but with centres-edge instead of edges-corner...

Wich puzzle do I reduce to then?? :D

// [[User:Kenneth|Kenneth]] 06:57, 7 November 2008 (UTC)

== Methods other than reduction for 5x5 and up ==

As far as I know everyone uses reduction for 5x5 and up?

V-Cube

2012-01-08T23:09:05Z

Swedishcuber: /* V-Cube 6 */

{{Manufacturer
|NAME=Verdes Innovations S.A.
|LOGO=Vcube_logo.jpg
|YEARFOUNDED=2000
|LOCATION=Greece
|YEARSACTIVE=2008-present
|AREASSERVED=Worldwide
|WEBSITE=http://www.v-cubes.com
|PRODUCTS=V-Cube 5, V-Cube 6, V-Cube 7
}}

'''V-cube''' is a brand of [[cube]] [[puzzles]] which started selling cubes in June 2008. For the moment they only sell the [[2x2x2]], [[5x5x5]], [[6x6x6]], and [[7x7x7]] puzzles, but they have plans to go from [[3x3x3]] all the way through 11x11x11.

V-cubes were invented by [[Panagiotis Verdes]] and are produced by Verdes Innovations S.A., Verdes's company located in Greece. The design of these cubes is completely new and different from all pre-existing designs, as it is based on the cone and as the pieces hook together instead of simply being held together by the centers. In addition, the plastic used for the V-cubes is a bit more elastic than the normal plastic for cubes. This leads to several advantages:
* V-cube pieces are much less likely to break than pieces of any other cube, and several people have tested this by drop-kicking the cubes, throwing them across the room or onto concrete, and so on, and then immediately playing with them afterwards. This would destroy a normal cube.
* When one piece of a V-cube pops out, the remaining pieces are still held in place, so the puzzle does not collapse like an [[Eastsheen]] 4x4 or 5x5 typically does. Because of this, even if a V-cube is loose enough to pop frequently, it will remain stable until the piece is placed back in, and it is even possible to do turns (such as finishing an algorithm) while the piece is missing.
* V-cubes seem to be significantly smoother than other brands, even out of the box, and their design allows them to cut corners and be fingertricked on without any lubrication or wearing in. This makes them excellent for speedcubing.

It is very important to note that V-cube was also the first company to ever mass-produce the 6x6 and 7x7 puzzles. In fact, only a handful of these higher-order cubes have ever created by anyone else, and none of those designs were stable enough to be mass-produced. Not only are the V-cubes the first to have such large sizes, however, but every size of V-cube can be speedsolved, and the V-cube 5x5 is far better than any other brand on the market. In short, buying a set of V-cubes is very highly recommended for anyone who is interested in solving [[big cube]]s.

== Products ==
=== V-Cube 2===
The v-cube 2x2 is seen as a good 2x2 by any people, but it's more expensive than the LanLan.

=== V-Cube 5 ===
This is almost certainly the best type of 5x5. The mechanism incorporates new principles which allow it to have low friction but also to remain intact even when several pieces are removed.
A V-cube 5x5 will easily cut corners without being broken in or lubed at all. This puzzle needs to be broken in to make it more easy to turn.
[[Image:Vcube5.jpg|none|thumb|V-Cube 5]]

=== V-Cube 6 ===
This cube has a clicking mechanism to keep a hidden inner layer it has from coming out of alignment and it does pop quite frequently.
This puzzle is bad out of the box. It looks up a lot. It needs be modified. The worst of the V-Cubes.
[[Image:Vcube6.jpg|none|thumb|V-Cube 6]]

=== V-Cube 7 ===
V-Cube is currently the only manufacturer of 7x7x7 cubes.
[[Image:Wiki 7x7x7 solved.jpg|none|thumb|V-Cube 7]]

== History ==
V-Cubes were initially announced in 2003 as Olympic Cubes.[http://games.groups.yahoo.com/group/speedsolvingrubikscube/message/5194] It was initially believed to be spam on the Yahoo! speedsolvingrubikscube forum. Although patents were announced in 2004, there was little information about V-Cubes even in early 2007.[http://games.groups.yahoo.com/group/speedsolvingrubikscube/message/32502] Later in 2007, prototypes of V-Cube 5 through7 were sent to [[Frank Morris]], the world record holder for 4x4 and 5x5 at the time.

== Patents and controversy ==

The V-Cube is protected by patent in many parts of the world, which has led to some controversy regarding knock-offs. Even puzzle types that are not available, such as the Maru 4x4x4, are considered in violation of patent, as the mechanism is inspired by V-Cubes. See for example the Speedsolving thread [http://www.speedsolving.com/forum/showthread.php?26141-Dayan-Guhong-vs.-V-Cube-Patent-Infringement Dayan Guhong vs. V-Cube Patent Infringement]

The US patent can be found on Google Patents.[http://www.google.com/patents/about?id=SRDJAAAAEBAJ]

== See Also ==
* [[Bigcubes]] (brands)
* [[Puzzle Hardware]]

== External Links ==
* http://www.v-cubes.com

[[Category:Cubing Terminology]]
[[Category:Puzzle Manufacturers]]
[[Category:Puzzle Shops]]
{{Stub}}

V-Cube

2012-01-08T23:08:47Z

Swedishcuber: /* V-Cube 6 */

V-Cube

2012-01-08T23:07:54Z

Swedishcuber: /* V-Cube 6 */

{{Manufacturer
|NAME=Verdes Innovations S.A.
|LOGO=Vcube_logo.jpg
|YEARFOUNDED=2000
|LOCATION=Greece
|YEARSACTIVE=2008-present
|AREASSERVED=Worldwide
|WEBSITE=http://www.v-cubes.com
|PRODUCTS=V-Cube 5, V-Cube 6, V-Cube 7
}}

'''V-cube''' is a brand of [[cube]] [[puzzles]] which started selling cubes in June 2008. For the moment they only sell the [[2x2x2]], [[5x5x5]], [[6x6x6]], and [[7x7x7]] puzzles, but they have plans to go from [[3x3x3]] all the way through 11x11x11.

V-cubes were invented by [[Panagiotis Verdes]] and are produced by Verdes Innovations S.A., Verdes's company located in Greece. The design of these cubes is completely new and different from all pre-existing designs, as it is based on the cone and as the pieces hook together instead of simply being held together by the centers. In addition, the plastic used for the V-cubes is a bit more elastic than the normal plastic for cubes. This leads to several advantages:
* V-cube pieces are much less likely to break than pieces of any other cube, and several people have tested this by drop-kicking the cubes, throwing them across the room or onto concrete, and so on, and then immediately playing with them afterwards. This would destroy a normal cube.
* When one piece of a V-cube pops out, the remaining pieces are still held in place, so the puzzle does not collapse like an [[Eastsheen]] 4x4 or 5x5 typically does. Because of this, even if a V-cube is loose enough to pop frequently, it will remain stable until the piece is placed back in, and it is even possible to do turns (such as finishing an algorithm) while the piece is missing.
* V-cubes seem to be significantly smoother than other brands, even out of the box, and their design allows them to cut corners and be fingertricked on without any lubrication or wearing in. This makes them excellent for speedcubing.

It is very important to note that V-cube was also the first company to ever mass-produce the 6x6 and 7x7 puzzles. In fact, only a handful of these higher-order cubes have ever created by anyone else, and none of those designs were stable enough to be mass-produced. Not only are the V-cubes the first to have such large sizes, however, but every size of V-cube can be speedsolved, and the V-cube 5x5 is far better than any other brand on the market. In short, buying a set of V-cubes is very highly recommended for anyone who is interested in solving [[big cube]]s.

== Products ==
=== V-Cube 2===
The v-cube 2x2 is seen as a good 2x2 by any people, but it's more expensive than the LanLan.

=== V-Cube 5 ===
This is almost certainly the best type of 5x5. The mechanism incorporates new principles which allow it to have low friction but also to remain intact even when several pieces are removed.
A V-cube 5x5 will easily cut corners without being broken in or lubed at all. This puzzle needs to be broken in to make it more easy to turn.
[[Image:Vcube5.jpg|none|thumb|V-Cube 5]]

=== V-Cube 6 ===
This cube has a clicking mechanism to keep a hidden inner layer it has from coming out of alignment and it does pop quite frequently. This puzzle is bad out of the box. It needs be modified.
[[Image:Vcube6.jpg|none|thumb|V-Cube 6]]

=== V-Cube 7 ===
V-Cube is currently the only manufacturer of 7x7x7 cubes.
[[Image:Wiki 7x7x7 solved.jpg|none|thumb|V-Cube 7]]

== History ==
V-Cubes were initially announced in 2003 as Olympic Cubes.[http://games.groups.yahoo.com/group/speedsolvingrubikscube/message/5194] It was initially believed to be spam on the Yahoo! speedsolvingrubikscube forum. Although patents were announced in 2004, there was little information about V-Cubes even in early 2007.[http://games.groups.yahoo.com/group/speedsolvingrubikscube/message/32502] Later in 2007, prototypes of V-Cube 5 through7 were sent to [[Frank Morris]], the world record holder for 4x4 and 5x5 at the time.

== Patents and controversy ==

The V-Cube is protected by patent in many parts of the world, which has led to some controversy regarding knock-offs. Even puzzle types that are not available, such as the Maru 4x4x4, are considered in violation of patent, as the mechanism is inspired by V-Cubes. See for example the Speedsolving thread [http://www.speedsolving.com/forum/showthread.php?26141-Dayan-Guhong-vs.-V-Cube-Patent-Infringement Dayan Guhong vs. V-Cube Patent Infringement]

The US patent can be found on Google Patents.[http://www.google.com/patents/about?id=SRDJAAAAEBAJ]

== See Also ==
* [[Bigcubes]] (brands)
* [[Puzzle Hardware]]

== External Links ==
* http://www.v-cubes.com

[[Category:Cubing Terminology]]
[[Category:Puzzle Manufacturers]]
[[Category:Puzzle Shops]]
{{Stub}}

V-Cube

2012-01-08T23:06:31Z

Swedishcuber: /* V-Cube 2 */

{{Manufacturer
|NAME=Verdes Innovations S.A.
|LOGO=Vcube_logo.jpg
|YEARFOUNDED=2000
|LOCATION=Greece
|YEARSACTIVE=2008-present
|AREASSERVED=Worldwide
|WEBSITE=http://www.v-cubes.com
|PRODUCTS=V-Cube 5, V-Cube 6, V-Cube 7
}}

'''V-cube''' is a brand of [[cube]] [[puzzles]] which started selling cubes in June 2008. For the moment they only sell the [[2x2x2]], [[5x5x5]], [[6x6x6]], and [[7x7x7]] puzzles, but they have plans to go from [[3x3x3]] all the way through 11x11x11.

V-cubes were invented by [[Panagiotis Verdes]] and are produced by Verdes Innovations S.A., Verdes's company located in Greece. The design of these cubes is completely new and different from all pre-existing designs, as it is based on the cone and as the pieces hook together instead of simply being held together by the centers. In addition, the plastic used for the V-cubes is a bit more elastic than the normal plastic for cubes. This leads to several advantages:
* V-cube pieces are much less likely to break than pieces of any other cube, and several people have tested this by drop-kicking the cubes, throwing them across the room or onto concrete, and so on, and then immediately playing with them afterwards. This would destroy a normal cube.
* When one piece of a V-cube pops out, the remaining pieces are still held in place, so the puzzle does not collapse like an [[Eastsheen]] 4x4 or 5x5 typically does. Because of this, even if a V-cube is loose enough to pop frequently, it will remain stable until the piece is placed back in, and it is even possible to do turns (such as finishing an algorithm) while the piece is missing.
* V-cubes seem to be significantly smoother than other brands, even out of the box, and their design allows them to cut corners and be fingertricked on without any lubrication or wearing in. This makes them excellent for speedcubing.

It is very important to note that V-cube was also the first company to ever mass-produce the 6x6 and 7x7 puzzles. In fact, only a handful of these higher-order cubes have ever created by anyone else, and none of those designs were stable enough to be mass-produced. Not only are the V-cubes the first to have such large sizes, however, but every size of V-cube can be speedsolved, and the V-cube 5x5 is far better than any other brand on the market. In short, buying a set of V-cubes is very highly recommended for anyone who is interested in solving [[big cube]]s.

== Products ==
=== V-Cube 2===
The v-cube 2x2 is seen as a good 2x2 by any people, but it's more expensive than the LanLan.

=== V-Cube 5 ===
This is almost certainly the best type of 5x5. The mechanism incorporates new principles which allow it to have low friction but also to remain intact even when several pieces are removed.
A V-cube 5x5 will easily cut corners without being broken in or lubed at all. This puzzle needs to be broken in to make it more easy to turn.
[[Image:Vcube5.jpg|none|thumb|V-Cube 5]]

=== V-Cube 6 ===
This cube has a clicking mechanism to keep a hidden inner layer it has from coming out of alignment and it does pop quite frequently.
[[Image:Vcube6.jpg|none|thumb|V-Cube 6]]

=== V-Cube 7 ===
V-Cube is currently the only manufacturer of 7x7x7 cubes.
[[Image:Wiki 7x7x7 solved.jpg|none|thumb|V-Cube 7]]

== History ==
V-Cubes were initially announced in 2003 as Olympic Cubes.[http://games.groups.yahoo.com/group/speedsolvingrubikscube/message/5194] It was initially believed to be spam on the Yahoo! speedsolvingrubikscube forum. Although patents were announced in 2004, there was little information about V-Cubes even in early 2007.[http://games.groups.yahoo.com/group/speedsolvingrubikscube/message/32502] Later in 2007, prototypes of V-Cube 5 through7 were sent to [[Frank Morris]], the world record holder for 4x4 and 5x5 at the time.

== Patents and controversy ==

The V-Cube is protected by patent in many parts of the world, which has led to some controversy regarding knock-offs. Even puzzle types that are not available, such as the Maru 4x4x4, are considered in violation of patent, as the mechanism is inspired by V-Cubes. See for example the Speedsolving thread [http://www.speedsolving.com/forum/showthread.php?26141-Dayan-Guhong-vs.-V-Cube-Patent-Infringement Dayan Guhong vs. V-Cube Patent Infringement]

The US patent can be found on Google Patents.[http://www.google.com/patents/about?id=SRDJAAAAEBAJ]

== See Also ==
* [[Bigcubes]] (brands)
* [[Puzzle Hardware]]

== External Links ==
* http://www.v-cubes.com

[[Category:Cubing Terminology]]
[[Category:Puzzle Manufacturers]]
[[Category:Puzzle Shops]]
{{Stub}}

V-Cube

2012-01-08T23:05:36Z

Swedishcuber: /* V-Cube 5 */

{{Manufacturer
|NAME=Verdes Innovations S.A.
|LOGO=Vcube_logo.jpg
|YEARFOUNDED=2000
|LOCATION=Greece
|YEARSACTIVE=2008-present
|AREASSERVED=Worldwide
|WEBSITE=http://www.v-cubes.com
|PRODUCTS=V-Cube 5, V-Cube 6, V-Cube 7
}}

'''V-cube''' is a brand of [[cube]] [[puzzles]] which started selling cubes in June 2008. For the moment they only sell the [[2x2x2]], [[5x5x5]], [[6x6x6]], and [[7x7x7]] puzzles, but they have plans to go from [[3x3x3]] all the way through 11x11x11.

V-cubes were invented by [[Panagiotis Verdes]] and are produced by Verdes Innovations S.A., Verdes's company located in Greece. The design of these cubes is completely new and different from all pre-existing designs, as it is based on the cone and as the pieces hook together instead of simply being held together by the centers. In addition, the plastic used for the V-cubes is a bit more elastic than the normal plastic for cubes. This leads to several advantages:
* V-cube pieces are much less likely to break than pieces of any other cube, and several people have tested this by drop-kicking the cubes, throwing them across the room or onto concrete, and so on, and then immediately playing with them afterwards. This would destroy a normal cube.
* When one piece of a V-cube pops out, the remaining pieces are still held in place, so the puzzle does not collapse like an [[Eastsheen]] 4x4 or 5x5 typically does. Because of this, even if a V-cube is loose enough to pop frequently, it will remain stable until the piece is placed back in, and it is even possible to do turns (such as finishing an algorithm) while the piece is missing.
* V-cubes seem to be significantly smoother than other brands, even out of the box, and their design allows them to cut corners and be fingertricked on without any lubrication or wearing in. This makes them excellent for speedcubing.

It is very important to note that V-cube was also the first company to ever mass-produce the 6x6 and 7x7 puzzles. In fact, only a handful of these higher-order cubes have ever created by anyone else, and none of those designs were stable enough to be mass-produced. Not only are the V-cubes the first to have such large sizes, however, but every size of V-cube can be speedsolved, and the V-cube 5x5 is far better than any other brand on the market. In short, buying a set of V-cubes is very highly recommended for anyone who is interested in solving [[big cube]]s.

== Products ==
=== V-Cube 2===
{{Puzzle Ratings

=== V-Cube 5 ===
This is almost certainly the best type of 5x5. The mechanism incorporates new principles which allow it to have low friction but also to remain intact even when several pieces are removed.
A V-cube 5x5 will easily cut corners without being broken in or lubed at all. This puzzle needs to be broken in to make it more easy to turn.
[[Image:Vcube5.jpg|none|thumb|V-Cube 5]]

=== V-Cube 6 ===
This cube has a clicking mechanism to keep a hidden inner layer it has from coming out of alignment and it does pop quite frequently.
[[Image:Vcube6.jpg|none|thumb|V-Cube 6]]

=== V-Cube 7 ===
V-Cube is currently the only manufacturer of 7x7x7 cubes.
[[Image:Wiki 7x7x7 solved.jpg|none|thumb|V-Cube 7]]

== History ==
V-Cubes were initially announced in 2003 as Olympic Cubes.[http://games.groups.yahoo.com/group/speedsolvingrubikscube/message/5194] It was initially believed to be spam on the Yahoo! speedsolvingrubikscube forum. Although patents were announced in 2004, there was little information about V-Cubes even in early 2007.[http://games.groups.yahoo.com/group/speedsolvingrubikscube/message/32502] Later in 2007, prototypes of V-Cube 5 through7 were sent to [[Frank Morris]], the world record holder for 4x4 and 5x5 at the time.

== Patents and controversy ==

The V-Cube is protected by patent in many parts of the world, which has led to some controversy regarding knock-offs. Even puzzle types that are not available, such as the Maru 4x4x4, are considered in violation of patent, as the mechanism is inspired by V-Cubes. See for example the Speedsolving thread [http://www.speedsolving.com/forum/showthread.php?26141-Dayan-Guhong-vs.-V-Cube-Patent-Infringement Dayan Guhong vs. V-Cube Patent Infringement]

The US patent can be found on Google Patents.[http://www.google.com/patents/about?id=SRDJAAAAEBAJ]

== See Also ==
* [[Bigcubes]] (brands)
* [[Puzzle Hardware]]

== External Links ==
* http://www.v-cubes.com

[[Category:Cubing Terminology]]
[[Category:Puzzle Manufacturers]]
[[Category:Puzzle Shops]]
{{Stub}}

V-Cube

2012-01-08T23:02:58Z

Swedishcuber: There are Shengshou 6x6s as well

{{Manufacturer
|NAME=Verdes Innovations S.A.
|LOGO=Vcube_logo.jpg
|YEARFOUNDED=2000
|LOCATION=Greece
|YEARSACTIVE=2008-present
|AREASSERVED=Worldwide
|WEBSITE=http://www.v-cubes.com
|PRODUCTS=V-Cube 5, V-Cube 6, V-Cube 7
}}

'''V-cube''' is a brand of [[cube]] [[puzzles]] which started selling cubes in June 2008. For the moment they only sell the [[2x2x2]], [[5x5x5]], [[6x6x6]], and [[7x7x7]] puzzles, but they have plans to go from [[3x3x3]] all the way through 11x11x11.

V-cubes were invented by [[Panagiotis Verdes]] and are produced by Verdes Innovations S.A., Verdes's company located in Greece. The design of these cubes is completely new and different from all pre-existing designs, as it is based on the cone and as the pieces hook together instead of simply being held together by the centers. In addition, the plastic used for the V-cubes is a bit more elastic than the normal plastic for cubes. This leads to several advantages:
* V-cube pieces are much less likely to break than pieces of any other cube, and several people have tested this by drop-kicking the cubes, throwing them across the room or onto concrete, and so on, and then immediately playing with them afterwards. This would destroy a normal cube.
* When one piece of a V-cube pops out, the remaining pieces are still held in place, so the puzzle does not collapse like an [[Eastsheen]] 4x4 or 5x5 typically does. Because of this, even if a V-cube is loose enough to pop frequently, it will remain stable until the piece is placed back in, and it is even possible to do turns (such as finishing an algorithm) while the piece is missing.
* V-cubes seem to be significantly smoother than other brands, even out of the box, and their design allows them to cut corners and be fingertricked on without any lubrication or wearing in. This makes them excellent for speedcubing.

It is very important to note that V-cube was also the first company to ever mass-produce the 6x6 and 7x7 puzzles. In fact, only a handful of these higher-order cubes have ever created by anyone else, and none of those designs were stable enough to be mass-produced. Not only are the V-cubes the first to have such large sizes, however, but every size of V-cube can be speedsolved, and the V-cube 5x5 is far better than any other brand on the market. In short, buying a set of V-cubes is very highly recommended for anyone who is interested in solving [[big cube]]s.

== Products ==
=== V-Cube 2===
{{Puzzle Ratings

=== V-Cube 5 ===
{{Puzzle Ratings
|pzl=V-Cube 5
|n=6
|ss=9.5
|lr=4.83
|cc=3.5
|pr=8.5
|qu=7.75
|rl=7.17
|wt
|ov=7.44
}}
This is almost certainly the best type of 5x5. The mechanism incorporates new principles which allow it to have low friction but also to remain intact even when several pieces are removed. Although it can take some time to break in, this type of 5x5 to the point where it is very easy to turn, a V-cube 5x5 will easily cut corners without being broken in or lubed at all.
[[Image:Vcube5.jpg|none|thumb|V-Cube 5]]

=== V-Cube 6 ===
This cube has a clicking mechanism to keep a hidden inner layer it has from coming out of alignment and it does pop quite frequently.
[[Image:Vcube6.jpg|none|thumb|V-Cube 6]]

=== V-Cube 7 ===
V-Cube is currently the only manufacturer of 7x7x7 cubes.
[[Image:Wiki 7x7x7 solved.jpg|none|thumb|V-Cube 7]]

== History ==
V-Cubes were initially announced in 2003 as Olympic Cubes.[http://games.groups.yahoo.com/group/speedsolvingrubikscube/message/5194] It was initially believed to be spam on the Yahoo! speedsolvingrubikscube forum. Although patents were announced in 2004, there was little information about V-Cubes even in early 2007.[http://games.groups.yahoo.com/group/speedsolvingrubikscube/message/32502] Later in 2007, prototypes of V-Cube 5 through7 were sent to [[Frank Morris]], the world record holder for 4x4 and 5x5 at the time.

== Patents and controversy ==

The V-Cube is protected by patent in many parts of the world, which has led to some controversy regarding knock-offs. Even puzzle types that are not available, such as the Maru 4x4x4, are considered in violation of patent, as the mechanism is inspired by V-Cubes. See for example the Speedsolving thread [http://www.speedsolving.com/forum/showthread.php?26141-Dayan-Guhong-vs.-V-Cube-Patent-Infringement Dayan Guhong vs. V-Cube Patent Infringement]

The US patent can be found on Google Patents.[http://www.google.com/patents/about?id=SRDJAAAAEBAJ]

== See Also ==
* [[Bigcubes]] (brands)
* [[Puzzle Hardware]]

== External Links ==
* http://www.v-cubes.com

[[Category:Cubing Terminology]]
[[Category:Puzzle Manufacturers]]
[[Category:Puzzle Shops]]
{{Stub}}

CLL

2012-01-06T23:59:57Z

Swedishcuber: Erik's page is down.

{{Method Infobox
|name=CLL (2x2x2)
|image=Cll.gif
|proposers
|year=1980s
|anames
|variants=[[LBL]]
|steps=2
|algs=42 (27 min)
|moves
|purpose=<sup></sup>
* [[Speedsolving]]
}}
'''CLL, Corners of Last Layer''', a method that solves the [[last layer]] [[corner]]s in one [[algorithm]].

CLL is not to be confused with [[COLL]] that is an abbrevation for exactly the same name but COLL does also preserve LL edge orientation, sometimes you will need longer algorithms for that.

There are two different sets of CLL, one that is used for [[corners first]] (the [[Waterman method]]) and the [[2x2x2 cube]] and one that preserves the [[first two layers]] on the [[3x3x3 cube]]. In the latter case the LL edges are solved after the CLL using [[ELL]].

== As a 2x2x2 Speedsolving Method ==

The first stage of CLL for the 2x2x2 consists of completely solving one layer of the cube (both orientation and permutation) as in the [[Layer by layer|Layer-By-Layer method]]. Then, using one of 42 algorithms (2 of which are PLLs), you solve the remaining orientation and permutation of the last layer (thus giving a 1 Look Last Layer). The algorithms needed are given in the [[CxLL|CxLL pages]]. This method is also named the Waterman method after the 1980's master cuber [[Marc Waterman]] from the Netherlands who was using it for his [[corners first]] method back then ([http://rubikscube.info/waterman/index.php the Waterman documentation]).

==History==
CLL was first officially used by [[Guus Razoux Schultz ]] ([http://www.worldcubeassociation.org/results/p.php?i=1982RAZO01 WCA]) during the [[World Rubik's Cube Championship 1982 | WC 1982]].

==See Also==
* [[CLL algorithms (3x3x3)]]
* [[CMLL]], [[COLL]], [[CxLL]], [[CxLL Algorithms]]
* [[L3C]], [[L4C]]
* [[OLL (2x2x2)]]
* [[PBL]]
* [[Waterman Method]]
* [[EG]]

== External Links ==
* [http://tinyurl.com/4yct9aa Robert Yau's CLL algs]
* [http://www.speedcubing101.com/cll.html Anthony Brooks' CLL algs]
* [http://dtwoner.110mb.com/index.php?p=1_31_CLL David Woner's CLL algs]
* [http://sites.google.com/site/kubbuth/2x2x2/cll 2x2x2 CLL in Swedish] [http://sites.google.com/site/kubbuth/2x2x2/cll/algos Algos]
* [http://www.kungfoomanchu.com/#2x2x2cll CLL algs in Printable PDF form from Kungfoomanchu.com]
* YouTube: [http://www.youtube.com/watch?v=X4WVutkJqic Erik Akkersdijk's CLL Tutorial]
* YouTube: [http://www.youtube.com/user/rowehess Rowe Hessler's Channel] - contains CLL algs
* YouTube: [http://www.youtube.com/user/RowanKinneavy Rowan Kinneavy's Channel] - more CLL algs

[[Category:Methods]]
[[Category:2x2x2 Methods]]
[[Category:2x2x2 Speedsolving Methods]]
[[Category:3x3x3 Methods]]
[[Category:Last Layer Methods]]
[[Category:Cubing Terminology]]
[[Category:Abbreviations and Acronyms]]
[[Category:Sub Steps]]

COLL

2012-01-06T23:51:12Z

Swedishcuber:

{{Method Infobox
|name=COLL
|image=OLLCP.png
|proposers=[[Lars Petrus]]
|variants=[[CLLEF]],[[OLLCP]]
|anames=Steps 5+6 ([[Petrus method]])
|year=
|steps=1
|algs=42
|moves=9.78 (Optimal [[HTM]])
|purpose=<sup></sup>
* [[Speedsolving]]
}}

'''COLL''' (an abbreviation for '''Corners of Last Layer''') is a method in the [[CxLL]] group that solves the [[Last Layer]] [[corner]]s in one [[algorithm]], while preserving the [[F2L]] and the orientation of the LL [[edge]]s. So, after the COLL step, only edge permutation ([[EPLL]]) is left. COLL requires learning 40 algorithms (42 if you include T-Perm and Y-Perm and 24 if you exclude mirrors).

COLL is not to be confused with [[CLL]], which is an abbreviation for exactly the same name. The difference is that CLL preserves the F2L but not the last layer edges orientation, so it leaves the LL edges scrambled and the next step would be full [[ELL]]. For some cases the CLL and the COLL are the same algorithm, but for other cases the CLL is much shorter. For CLL and COLL algorithms, see the page on [[CxLL Algorithms]].

One possible extension of COLL is [[ZBLL]]. This LL method solves the entire LL if the edges are already oriented, but it has almost 500 cases. Another one is [[OLLCP]] which solves the corner permutation and [[OLL|orients the last layer]] with a total of over 300 algorithms for all last layer cases.

==See Also==
* [[CxLL Algorithms]]
* [http://www.speedsolving.com/wiki/index.php/Special:AlgDB?mode=view&view=default&puzzle=3&group=COLL&moves=FU2B%27UF%27U%27BU%27FU%27F%27 COLL Algorithms]
* [[CLLEF]]
* [[CLL]], [[CLL algorithms (3x3x3)]]
* [[CMLL]]
* [[ZBLL]]
* [[OLLCP]]

== External Links ==
* [http://www.cubezone.be/coll.html COLL Algorithms] By Lars Vandenbergh
* [http://www.stanford.edu/~leyanlo/ COLL Algorithms] By Leyan Lo
* [http://www.cubewhiz.com/coll.html Bob Burton's COLL Page]
* [http://jmbaum.110mb.com/coll.htm Jason Baum's COLL Page]
* [http://cube.danrcohen.com/coll.html Dan Cohen's COLL Page]

[[Category:Methods]]
[[Category:3x3x3 Methods]]
[[Category:Last Layer Methods]]
[[Category:Cubing Terminology]]
[[Category:Abbreviations and Acronyms]]
[[Category:Sub Steps]]

Category:Bigcubes

2011-12-30T16:54:21Z

Swedishcuber: /* 4x4x4 */

Brands/makes of cube dimensions 4x4x4 and above.

== 4x4x4 ==
There are ten major brands of [[4x4x4]] cubes used by speedcubers.
* [[Rubik's Revenge]]
* [[Eastsheen 4x4x4]]
* [[Meffert's 4x4x4]]
* [[QJ 4x4x4]]
* [[Maru 4x4x4]]
* [[X-Cube 4x4x4]]
* [[Dayan+MF8 4x4x4]]
* [[Shengshou 4x4x4]]
* [[Ghosthand 4x4x4]]
* [[Lanlan 4x4x4]]
However, the Rubik's Revenge 4x4x4 cube, manufactured by the Rubik's company, was the best 4x4x4 in 2008 but then they changed the mechanism making it worse.
Almost everybody started to use The Eastsheen or the Meffert's cube.
The DaYan+MF8 cube is probably the most popular cube today.

== 5x5x5 ==
Until recently, there were two major brands of [[5x5x5]], but the [[V-cube]] brand has made its way into the speedcubing community by providing an extremely good 5x5x5 which is almost unanimously considered the best brand by far. The following brands are available in 5x5x5 cubes:

* [[Professor's Cube]] (Rubik's)
* [[Eastsheen 5x5x5]]
* [[V-Cube 5]]
* [[Meffert's 5x5x5]]
* [[Ghosthand 5x5x5 (Otherwise known as ShenShou)]]
* [[YJ 5x5]]

== 6x6 and 7x7 ==
* [[V-Cube]]
* [[YJ]]
* [[ShengShou]]

== See Also ==
* [[4x4x4 Cube]] (puzzle type)
* [[5x5x5 Cube]] (puzzle type)
* [[6x6x6 Cube]] (puzzle type)
* [[7x7x7 Cube]] (puzzle type)
* [[Twisty Puzzles]]
* [[Puzzle Shops]]
* [[Puzzle Manufacturers]]
* [[2x2x2 Cubes]]
* [[3x3x3 Cubes]]
* [[Other Puzzles]]

== External Links ==

[[Category:Puzzle Hardware]]