The "Request an Alg" Thread

[Arkwell]

F2L TOUGH CASE ALGS.

Guys, for F2L cases: 32, 38, 39, 40, 41, 42.
do you stick with the algs on SS wiki or are there better one's out there?
Feel free to post as many as you want.

 

[soldii3runit]

Guys, for F2L cases: 32, 38, 39, 40, 41, 42.
do you stick with the algs on SS wiki or are there better one's out there?
Feel free to post as many as you want.

for 32 I do the first alg . doesnt get any easier. the 1st 4 moves repeat 3 time. (R U R' U')3

the rest is in intuitive for me

 

[Rpotts]

Guys, for F2L cases: 32, 38, 39, 40, 41, 42.
do you stick with the algs on SS wiki or are there better one's out there?
Feel free to post as many as you want.

I use almost exclusively stuff available on the wiki but these are good too -

39 - R2 U2' R' U' R U' R' U2 R'

40 - R U2 R U R' U R U2' R2

41 - F' L' U2 L F R U R'

 

[ottozing]

I need an alg for the OLL "superman" other than R2 D R' U2 R D' R' U2 R'...that alg just feels awkward to me.

heres a couple more to add onto rpotts post

R' F2 R U2 R U2 R' F2 R U2 R'

y2 R U R' U' R' F2 R' U' R' U' R U R' F2

y2 R' U Rw' F R F' Rw U2 R' U R

y2 R' D R2 U' R' U' R U2 R2' D' R

y2 R U' R' U R U' y' Rw' U' R U' R' U' L U2 x

y F U' R' U R U F' R' U2 R

y2 R' U2 R U2 R' F' R U R' U' R' F R2

 

[whauk]

i need a UF/UB 2-flip for blind. i often mess up the (M' U) repeating one because i am retarded.
i already thought about R2 U' F B' R2 F' B U' M' R' U R' U' M U R U' R' (a combination of U-perm+OLL that is fast to execute) but i dont like it that much either. are there any fast alternatives?

 

[ottozing]

i need a UF/UB 2-flip for blind. i often mess up the (M' U) repeating one because i am retarded.
i already thought about R2 U' F B' R2 F' B U' M' R' U R' U' M U R U' R' (a combination of U-perm+OLL that is fast to execute) but i dont like it that much either. are there any fast alternatives?

R U R' U' M' U R U' M R U S' U2 S U R2?

edit: M' U M' U M' U2 M U M U M U2?

 

[Kenneth]

i need a UF/UB 2-flip for blind. i often mess up the (M' U) repeating one because i am retarded.
i already thought about R2 U' F B' R2 F' B U' M' R' U R' U' M U R U' R' (a combination of U-perm+OLL that is fast to execute) but i dont like it that much either. are there any fast alternatives?

Here is one 12-mover that uses two 3-cycles:

First: U2 M' U2 M (you know this one)
Second: d M U' R2 U M' U' R2 (this is actually A-PLL but done in the middle layer)
Then do (y) to reorient

This one is pretty intuitive: (also 12 moves)
Flip one edge: (yz) U M U2 M2 U
Then switch to the second edge using the R-side, here you can choose any of the three unflipped edges in R but here we like the opposite so use R2
Flip second edge by inverting the first half : U' M2 U2 M' U'
Switch back in R using R2 and reorient (z'y')

All in one go: (yz) U M U2 M2 U R2 U' M2 U2 M' U' R2 (z'y')

Then the weirdo alg, again a 12-mover:
M' d M d M' U2 M d' M' d' M U2
Also pretty intuitive

 

[Robert-Y]

i need a UF/UB 2-flip for blind. i often mess up the (M' U) repeating one because i am retarded.
i already thought about R2 U' F B' R2 F' B U' M' R' U R' U' M U R U' R' (a combination of U-perm+OLL that is fast to execute) but i dont like it that much either. are there any fast alternatives?

I just found this with cube explorer 5:

F R2 U R' U' R' U2 L F R F' R' L' U2 F'

which turns into: F R2 U R' U' R' U2 r U R U' r' R' U2 F'

It's not bad...

 

[DYGH.Tjen]

i need a UF/UB 2-flip for blind. i often mess up the (M' U) repeating one because i am retarded.
i already thought about R2 U' F B' R2 F' B U' M' R' U R' U' M U R U' R' (a combination of U-perm+OLL that is fast to execute) but i dont like it that much either. are there any fast alternatives?

You're using the (M' U) one?
U (M' U)3 M2' U (M' U)3
This is harder to mess up I suppose: M U M U M U2 M' U M' U M' U2. Executed as r'R U r'R U r'R U2 M' U M' U M' U2.

 

[micronexer]

Okay, this might be hard to explain...

Is there a 5x5 or 7x7 alg that swaps the edge next to a corner and one further inside? Also, is there an alg that swaps two edges either side of a corner? If it's hard to understand (One for the orange pair with red arrows, and one for the pink pair with blue arrows.)



It's probably a noobish request, but if anyone can help it'd be appreciated.

 

[MaeLSTRoM]

Okay, this might be hard to explain...

Is there a 5x5 or 7x7 alg that swaps the edge next to a corner and one further inside? Also, is there an alg that swaps two edges either side of a corner? If it's hard to understand (One for the orange pair with red arrows, and one for the pink pair with blue arrows.)

Spoiler: Image

It's probably a noobish request, but if anyone can help it'd be appreciated.

Its not posible to do the Red-arrow swap, those piece types are different.

 

[micronexer]

^I see how this is now, after a bit of experimenting on CubeTwister. In that case, is there two that do these?
EDIT: Keeping all centers intact, but corners aren't a problem.

Spoiler: Image

 

[mycube]

this is not possible too.

 

[micronexer]

^Okay, thanks for clarifying at least. If anyone has either alg, please tell

 

[emolover]

this is not possible too.

Actually it is in an easy way to understand, two 5x5 parities.

Thus being possible.

 

[micronexer]

Actually it is in an easy way to understand, two 5x5 parities.

Thus being possible.

If you have the algy for it, can you PM it here? Cheers

 

[Christopher Mowla]

If you have the algy for it, can you PM it here? Cheers

Here are two algorithms I just made by hand for this "2 2-cycle of wing edges."

The first algorithm is to combine two brief wing 3-cycle algorithms.
(r' F R' F' r F R F') (B u2 F' U F u2 F' U' F B') (which cancels to 16 btm) (Supercube Pure)

Or you could just use a conjugate (affects centers on supercubes though)
[r2 F' U2 F U' F' R F' U: r2] (19 btm) (6 Color Cube Pure Only)

I didn't try to make algorithms which mess up corners or composite edges, so there could be shorter solutions for merely swapping those wing edges while destroying the "Pseudo 3x3x3 state of the 7x7x7."

There also could be shorter solutions for either the Supercube Pure, 6 color cube pure, or both. If so, not much less because this is "not a pretty case" as far as moves are concerned.

 

[micronexer]

Thanks for the help

EDIT: Are there also algorithms to do the swaps separately? As in;

Spoiler

Last two, I promise.

Thanks again, Micro

 

[Christopher Mowla]

Are there also algorithms to do the swaps separately?

Of course. Here are a few algorithms for each.

For "Case 1,"
l2 r' U B2 U' r U B2 Lw U2 r U2 Lw' U' l2 = [l2 U: [U' r' U, B2] [Lw U2: r] ] (21,15)
x' l2 F U2 l U2 r' U2 r U2 F2 r F2 l' F' l2 x = [x' l2 F: [U2, l U2 r'] [l F2: r] ] (23,15)
r U2 r U2 F' L F' r F L' F l' U2 l U2 r2 = [r2 U2 l' U2 l: [l' U2: [l U2 r', U2]] [F' L F': r] ] (21,16)

For "Case 2,"
r2 U2 l' U2 l F2 r' F2 U2 r' U2 r' = [r U2 r U2 l': [l U2 r', U2] [l F2: r'] ] (19,12)
r2 U2 l U2 r' U2 r U2 l' r U2 r U2 r = [r2: [U2, l U2 r'] [r U2: r] ] (21,14)

 

[evogler]

What's the shortest alg that only twists corners? I don't care which corners or which directions, I just want to know the quickest way to make some twists happen. I currently use the double-sexy commutator, or sune + U perm. I'm hoping there's something shorter. Again, I'm open to any corners in any direction.
This is for the PO "method", btw.
Thanks
Edit: Actually, it's okay to mess with edge orientation, too. So, the shortest alg that affects corner orientation but doesn't change any permutation.