The "Request an Alg" Thread

[SpeedCubeReview]

Ok, I am looking for an OLL super cube 4x4 parity algorithm. I cannot find it on the speedsolving wiki. I remember seeing on Youtube but cannot find the video again. It was such an easy alg to do too.... It was something like r' F R U R2 F' r l F R2 U' R' F' l... but that is not it. Any idea what I might be thinking of? It definitely started with an internal r move r' then some other moves ending in r followed by l with the same moves reverse and then l'.

Edit: Ok, I think I am actually thinking of a PLL alg.... same issue though.

Edit 2: found it
r' (U' R U F R2 F') r l (F R2 F' U' R' U) l'

 

[shadowslice e]

How long are 2x2x2 3-cycles only caring about 1 corner's orientation?

Or 3x3x3 caring about nothing except CP and 1 CO (not even centres).

 

[SpeedCubeReview]

A there an algorithm for a 4x4 to move center pieces without messing up the rest of the cube. The entire center needs to be rotated 90 degree which I know cannot happen on a normal 3x3.

 

[Michael Womack]

A there an algorithm for a 4x4 to move center pieces without messing up the rest of the cube. The entire center needs to be rotated 90 degree which I know cannot happen on a normal 3x3.

I think this video will help you https://www.youtube.com/watch?v=LOHNmKLA6AU

 

[SpeedCubeReview]

I think this video will help you https://www.youtube.com/watch?v=LOHNmKLA6AU

Maybe I'm just not getting it. I'm looking for an alt that will just rotate the center pieces each 90 degrees on the 4x4. Is there one out there?

 

[Michael Womack]

Maybe I'm just not getting it. I'm looking for an alt that will just rotate the center pieces each 90 degrees on the 4x4. Is there one out there?

If it's only the center then do the 3x3 center alg to rotate one center 90 https://www.youtube.com/watch?v=f2igsgfrXfQ

 

[guysensei1]

If it's only the center then do the 3x3 center alg to rotate one center 90 https://www.youtube.com/watch?v=f2igsgfrXfQ

You can't rotate a single center by 90 degrees.

 

[SpeedCubeReview]

You can't rotate a single center by 90 degrees.

Ya. That is why I am wondering if there is one that will move the centers around clockwise while keeping the rest of the cube together.

 

[Praetorian]

Ya. That is why I am wondering if there is one that will move the centers around clockwise while keeping the rest of the cube together.

U M E' M' E U' E' M E M' ? holding center that needs to be twisted on U face

EDIT: 333th post

 

[SpeedCubeReview]

U M E' M' E U' E' M E M' ? holding center that needs to be twisted on U face

EDIT: 333th post

That turns two faces 90 degrees. Ok. So I've tried solving my new Megamorphox about half a dozen times and overtime I get this (photo). I have looked at CBC's as well as many other tutorials, but nothing seems to touch upon this case, or at least I am not understanding it.

 

[qaz]

That turns two faces 90 degrees. Ok. So I've tried solving my new Megamorphox about half a dozen times and overtime I get this (photo). I have looked at CBC's as well as many other tutorials, but nothing seems to touch upon this case, or at least I am not understanding it.
View attachment 5623
https://www.speedsolving.com/forum/attachment.php?attachmentid=5623&d=1447131494

The problem is that ONLY rotating a center 90 degrees is 3 swaps, which violates parity. If you swap two identical centers somewhere else on the puzzle I think you should be good.

 

[SpeedCubeReview]

The problem is that ONLY rotating a center 90 degrees is 3 swaps, which violates parity. If you swap two identical centers somewhere else on the puzzle I think you should be good.

swap two identical centers?

There is no algorithm out there to just rotate the four x-center pieces?

 

[qaz]

swap two identical centers?

There is no algorithm out there to just rotate the four x-center pieces?

No, that's not possible.

It's difficult for me to work out a solution since I don't actually have one of these cubes, but I'll try:

Hold the four unsolved x-center pieces on the front with blue-red-yellow corner in the picture at UFL. Then do (small letters are slice moves):
r U l' U' r' U l U' - this cycles FDR to UFR to FDL, and since FDR and UFR are identical blue pieces it appears to be a 2-cycle (it's really a 3-cycle)
x - reposition so the unsolved group is on top
r' u r U r' u' r U r' u r U2 r' u' r - cycles UBR to UBL to UFL

 

[SpeedCubeReview]

No, that's not possible.

It's difficult for me to work out a solution since I don't actually have one of these cubes, but I'll try:

Hold the four unsolved x-center pieces on the front with blue-red-yellow corner in the picture at UFL. Then do (small letters are slice moves):
r U l' U' r' U l U' - this cycles FDR to UFR to FDL, and since FDR and UFR are identical blue pieces it appears to be a 2-cycle (it's really a 3-cycle)
x - reposition so the unsolved group is on top
r' u r U r' u' r U r' u r U2 r' u' r - cycles UBR to UBL to UFL

Perfect. Thank you

 

[mjm]

I am looking for a 2-gen 2x2 alg that solves the case that can be set up with:
R U' R F2 R' U R' x2 y'
Just curious and maybe I could use it in solves as well?

 

[Sam N]

I am looking for a 2-gen 2x2 alg that solves the case that can be set up with:
R U' R F2 R' U R' x2 y'
Just curious and maybe I could use it in solves as well?

This is the algs I use. It's basically transcribed from the square-1 cp alg for that case.
R2 U R2 U' R2 U R2 U' R2

 

[TDM]

I am looking for a 2-gen 2x2 alg that solves the case that can be set up with:
R U' R F2 R' U R' x2 y'
Just curious and maybe I could use it in solves as well?

R U' R' U R' U2 R U' R U R'

R U' R' // take out DFL corner
U R' U2 R // insert it in the right place
U' R U R' // finish FL

 

[mjm]

R U' R' U R' U2 R U' R U R'

R U' R' // take out DFL corner
U R' U2 R // insert it in the right place
U' R U R' // finish FL

That's wonderful. Great execution as well.
Thanks!

 

[KRAMIST]

i need 2 gen all G perms i dont care about movecount just need the algs thanks.

 

[sqAree]

I thought 2-gen G perms don't exist?