Talk:Pocket Cube

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Contents 1 Independently rotated 2 Disassemble? 3 Junior Cube 4 Table 5 What do this means?

[edit] 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)

[edit] 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)

[edit] 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)

[edit] 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)

[edit] 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)