Are there any algorithms for slicing 4x4 centers while preserving the edges?

[Neutrals01]

Hmm...once a while I get situation where all my 4x4 dedges are solved but my centers are one slice away... it gets annoying and I have to slice it back and use my slow method by swaping the edges one by one to solve it(as in position 2 dedges beside and perform d R U R' F R' F' R d' , and need perform 2~3 times of that...which takes me up to 15~30 secs)... so I am trying to search if there are any algorithms that can slice the centers without affecting the solved dedges? sorry if there is already a thread that talked about that...but I could not find it with the search function..

 

[Lucas Garron]

You don't know (U2 2R)5?

 

[Neutrals01]

2R means? r2? Rw2?

and for that (U2 2R)x5 is swap 2 opposite centers? I am trying to find an algorithm that can slice the centers as in>> example : green top blue bottom... then white pair(2x1 block) go to orange(2x1 block)>> go to yellow(2x1 block) >> go to red(2x1 block) >> go back to white.. without affecting the dedges..

 

[MistArts]

2R means? r2?

Rw R' The old notation is too confusing.

 

[Stefan]

Damn you Lucas, I was hoping to see some alternative answers before that one.
Neutrals: Does the applet not work for you or why do you have to ask that?

 

[Neutrals01]

hmm..I don't think that is the answer I am looking for..

my method is solve centers first then dedges... while pairing up dedges.. the last 2 or 3 dedges...sometimes I have to slice once more to solve all the 12 dedges...but then with that slice... the centers are misalined by 1 slice...

hmm...I don't really know how to use that applet..? a quick tutorial?(there are some stuffs on the right but I can't view it)

 

[MistArts]

hmm..I don't think that is the answer I am looking for..

my method is solve centers first then dedges... while pairing up dedges.. the last 2 or 3 dedges...sometimes I have to slice once more to solve all the 12 dedges...but then with that slice... the centers are misalined by 1 slice...

What happens if you do another (Rw R') turn after it?

 

[Neutrals01]

then the dedges are interupt?

 

[TMOY]

If you only want to swap center cubies, you can use algs from centers last methods For example:
E2 l E2 l u2 l2 u2
or E2 l' E2 l' u2 l2 u2 for the other direction.

 

[Stefan]

Try (U2 Rw)6

(Lucas, your link text alg doesn't match the actually linked alg, it's off by a U2)

 

[cardmagic12345]

Watch LanceTheBlueKnight's video on how to solve the last two centers on a 7x7. I would link you but I'm on a slow connection. Its Very useful.

Yes I'm not posting in the wrong thread, watch it.

 

[Lucas Garron]

Try (U2 Rw)6

(Lucas, your link text alg doesn't match the actually linked alg, it's off by a U2)

I know. The important part (the way the alg is known) was the 5 times, the extra U2 makes the applet understandable, and I didn't just wanna hand him the 6. So I decided that it wasn't worth trying to dissolve the discrepancy when I'm already hoping he has a brain.

EDIT: After I move the location of SiGN, I'll implement a button for automatically generating URLs for forums, so then I'll be too lazy to allow discrepancies in my own pastes.
Got a good name? eCube's kinda taken, LCube/LGCube's kinda selfish.
cube.garron.us/alg.php?
alg.garron.us?

 

[DavidWoner]

You don't know (U2 2R)5?

neutrals: see how its blue? click it, its what you are asking for.

lucas: fastalg?

 

[Neutrals01]

hmm..I know it is in blue....and I clicked it but I don't seem to know how to use it... and on the right of that page..there is a picture or something but I cannot view it...

and thanks Stefen....that is what I am looking for ^_^ guess I am confused with the 2R thingy...which I thought was r2 or r...

but after performing that it solved 2 centers..now another 2 more centers havent solve..2 pairs beside each other

red red | red red
green green | green green

how to swap it to correct location without affecting the other centers and solved dedges? sorry I do not know how to use the applet... >.<

 

[Stefan]

How do you get into that situation? The other one I could understand, but this?

 

[TMOY]

red red | red red
green green | green green
how to swap it to correct location without affecting the other centers and solved dedges? sorry I do not know how to use the applet... >.<

Assuming R is red and F is green, you can do:
d M U2 M' d'
That's juste d F2 d' with F2 replaced by M U2 M' in order not to affect the middle layer dedges.

 

[amostay2004]

From what i understand i'm assuming you're doing 3 edge pairing at a time? I think if you follow syuhei's edge pairing method this problem will be rare..

or better, just switch to 2-gen =p

 

[Neutrals01]

well I am randomly using the pairing method...sometimes 3 by 3..sometimes 1 by 1..sometimes 2 by 2...see situation...and sometimes got this problem...

TMOY : thx for that algo...now finally can solve the last 2 pairs ^_^...

Stefen : thanks for the algo too... ^_^

 

[Stefan]

Still don't know exactly how you build the edges, but I have a feeling that this is the result of a mistake which would better be prevented rather than made and fixed. Unless you pay with that situation for an advantage. Then it's really a trade-off issue.