Talk:Pocket Cube

Independently rotated

The statement that "7 of the cubelets can be independently rotated" is a bit misleading. It's not that you can take any 7 of the cubelets and rotate them independently however you want, but that the space of ways to rotate the cubelets is 7-dimensional as a vector space over the integers mod 3. Thus there are 7 independent rotations of the cubelets, but each of those rotations affects more than one cubelet.--70.255.41.114 22:45, 21 February 2006 (UTC)

I don't understand. Can I rotate a single corner without affecting the other seven, or not? Can I rotate two corners in the same direction without affecting the other six? How about opposite directions? The article on the ordinary cube gave the total number of cubelet positions for comparison-- I found that informative. In the case of the Pocket cube, wouldn't that be 8!x3⁸/24 ? --131.193.179.146 01:43, 18 September 2007 (UTC)

No, that's not the case. You can rotate 7 of the corners independently, but the orientation of the last corner will always be dependent on the first 7. --M1ss1ontomars2k4 (talk) 23:49, 8 March 2008 (UTC)

Disassemble?

I've got the cubes from 2x2x2 to 5x5x5. The Rubik's Cube article has a section on the inner workings and how to disassemble the cube. My Pocket Cube is pretty tight and I've never taken it apart. Can it be taken apart in such a way that it can be reassembled? What are the inner workings like? I'm not willing to experiment on my cube, but I'm sure that someone has. Val42 17:35, 15 July 2006 (UTC)

I've taken mine apart; it is trickier than a normal cube, and I warped some of my pieces slightly, so it no longer rotates as freely as it used to. Mechanically it is actually a 3x3x3 cube, with the edge and center pieces hidden by the corners. It's actually slightly more complicated than a regular cube, as some of the edge pieces are locked to their adjacent corners in order to ensure that the cube can always be twisted about any of its three axes when it appears to be aligned. Without this tweak, the center horizontal layer, for example, could be misaligned (rotated 45 degrees), preventing the cube from being twisted about one of the vertical planes.Speight 04:24, 5 June 2007 (UTC)

Here's a photo I found just now on the manufacturer's site that shows the 2x2x2 cube's construction: [1] Speight 04:30, 5 June 2007 (UTC)

All of this is true only for the Rubik's 2x2. The Eastsheen 2x2 is far more complicated. --M1ss1ontomars2k4 (talk) 23:47, 8 March 2008 (UTC)

Junior Cube

The article stated that there was a picture of a monkey on one layer. The monkey is on one face, not layer. I changed this. —Preceding unsigned comment added by 72.51.139.111 (talk) 07:06, 25 November 2007 (UTC)

Those mean the same thing on the Pocket Cube. Although it is indeed clearer to say that it is on one face. --M1ss1ontomars2k4 (talk) 23:49, 8 March 2008 (UTC)

(talk) NinjaNate2000: I cannot solve my Junior cube. Had it since I was 7, and it came unsolved. Never been solved. — Preceding undated comment added 16:00, 18 May 2014 (UTC)

Table

I don't understand this table very well: if the cube needs 11 turns to get solved, ¿why it says 2644 positions if there are 3674160 different positions? --Daniel bg (talk) 16:53, 12 February 2008 (UTC)

There are exactly 2644 positions for which you need exactly 11 turns to solve the cube. --M1ss1ontomars2k4 (talk) 23:48, 8 March 2008 (UTC)

What do this means?

What do "F' D2 L2 B' D' B R' D' R' U L' B' L2 U'L2 U2 R2 B2 R2 U2 B2 R2 D R2 D2" means? Alexius08 (talk) 10:05, 6 March 2008 (UTC)

F' means turn the front face counterclockwise once. D2 means turn the down face clockwise twice. B is back, R and L are right and left, and U is up. Hopefully this is clear. --M1ss1ontomars2k4 (talk) 23:45, 8 March 2008 (UTC)

Records

I read that the record for the pocket cube was 1.64 seconds, can someone check this out. —Preceding unsigned comment added by 211.28.150.70 (talk) 07:54, 23 October 2008 (UTC)

Its now 0.96, made by Erik A on November 8th, 2008 70.230.176.84 (talk) 04:04, 11 November 2008 (UTC)

Is it really useful to be all the world records on wikipedia? Some Rubik's cube world records have been broken thrice in a year.. Swedishcuber (talk) 18:15, 9 January 2012 (UTC)

Picture - Records

For some reason, the picture under the Records section is being overlapped by the header line. Do you know how to fix this problem? --Kevinmon (talk) 19:03, 24 September 2009 (UTC)

I don't see the problem you describe. Perhaps it's your browser? ∙ AJCham^(talk) 19:09, 24 September 2009 (UTC)

It is probably just my browser then. Thanks anyways! Kevinmon (talk) 19:13, 24 September 2009 (UTC)

ice cube

as far as I know, Rubik's cubes are not ice cubes and real ice cubes aren't all cubes. also, it compares to the speed so there is no way to modify it to look like an ice cube. see this?

try saying 1 2 4 5 3 0 9 8 6 7 5 6 1 along with the video once on another page someone said we have too much adittional symbols on Wikipedia for the computer keys to be needed now the computer keys have came to good use

symbols like № and ♠♣♥♦ aren't used anymore

so keep onn track so mack says it — Preceding unsigned comment added by 99.185.3.0 (talk • contribs) 00:03, 4 September 2013 (UTC)

I am very confused by what you wrote. But anyway, about "ice cube". Rubik's seems to have sold a transparent version of the 2x2 called "ice cube" at some point (Amazonz-Link). But I am not sure whether that is enough to warrant a mention in the article. After all Rubik's also released a "Junior Cube" with the same mechanism and it isn't mentioned in the article. user:GiantSnowman and user:HelloORacle, can we please discuss here before you edit back and forth? Thank you. Judith Sunrise (talk) 14:57, 9 March 2018 (UTC)

However, there's also been a prank on popular online speedcube retailer, also titled ice cube. (Link). I don't believe the transparent version is popular enough to be mentioned on the page. HelloORacle (talk) 16:57, 9 March 2018 (UTC)

The OP just posted gibberish. I have removed the image and other nonsense that was just clutter on the page. The whole post should probably have been removed when it was made. On the ice cube, whether or not it should be mentioned in the article, it definitely should not be in the lead as an alternative name. If anything, it is just a special version. SpinningSpark 23:56, 9 March 2018 (UTC)

I agree. It's a special version just like the "Junior Cube". Just like we won't list sticker-mods of 3x3s. Judith Sunrise (talk) 12:10, 13 March 2018 (UTC)

How many pictures?

Do we really need 4 pictures? I thin one picture with (a) solved cube(s) and 1 picture of a scrambled cube should be enough. I am going to remove the solved cube because it adds no additional information if we already have a picture of 4 solved cubes beneath. Judith Sunrise (talk) 15:53, 18 April 2018 (UTC)

The shortest solution

Hey folks, Melcous removed my edit and I am not going to argue. However I did read the link guideline and didn't find my link in violation of terms. If you guys don't want to have the tool that finds the shortest solution which is at most 11 moves for any cube, its ok by me.Kuligram (talk) 15:29, 9 January 2019 (UTC)

Please add new paragraphs to the bottom of the discussion page, not to the top. I don't have a problem with the sentence ("The shortest (optimal) solution can be found by e.g. computer search methods.") I do have a problem with the link though. To support that sentence something like an academic paper (e.g. if you'd write your bachelor thesis on the topic) or at least a news article would be better. Github does not seem like a nice source. Judith Sunrise (talk) 17:24, 9 January 2019 (UTC)

Outdated Title

Nobody calls this a pocket cube anymore. The widely used term is 2x2, and the title should reflect this. — Preceding unsigned comment added by Hadofhfo (talk • contribs) 16:03, 5 April 2019 (UTC)

I think plans should be made to start this change, as I have not heard anyone call it pocket cube outside of Wikipedia, and I imagine someone trying to find this article might have trouble as they will not know the name of the article is Pocket Cube. The name pocket cube is neither recognizable, or natural.

"Recognizability – The title is a name or description of the subject that someone familiar with, although not necessarily an expert in, the subject area will recognize.

Naturalness – The title is one that readers are likely to look or search for and that editors would naturally use to link to the article from other articles. Such a title usually conveys what the subject is actually called in English."

I hope that the name of this article will be changed soon. Ota Mota (talk) 21:09, 23 January 2024 (UTC)