The "Request an Alg" Thread

[Mr Beast]

Can someone do a few and tell me what they think is the faster algorithm for the oll "headlights" ?

Either: y' R U2 R' U' R U' R' L' U2 L U L' U L
Or: (R2 D) (R' U2) (R D') (R' U2 R')

The first, although longer has a lot of easy finger-tricks.

 

[slords17]

slords17: the only extra alg you need is Lw' U2 Lw' U2 x U2 Lw' U2 3Lw U2 Rw' U2 3Rw2.

What does that do?

 

[TDM]

What does that do?

You use it to pair edges, specifically this case:

after a y2.

 

[AlphaSheep]

Can someone do a few and tell me what they think is the faster algorithm for the oll "headlights" ?

Either: y' R U2 R' U' R U' R' L' U2 L U L' U L
Or: (R2 D) (R' U2) (R D') (R' U2 R')

The first, although longer has a lot of easy finger-tricks.

The first is useful to remember as a pure 2-corner twist, but not so great as a general OLL.

I really like the second. It's the most popular alg for headlights OLL and I use it and its mirror as COLL algorithms.

Another nice one that I use is (R U R' U') (R U' R' U2) (R U' R' U2) (R U R')

 

[xuancong84]

Any formula safe for opposite edge swap on 4x4x4 super-super-cube?

I am aware of tons of 4x4x4 edge swap formula on web.
But does someone knows one which is super-super-cube-safe, i.e., directly solves the configuration below?

I just encountered this yesterday. But I don't want to mess up other pieces.
Thanks!

 

[Christopher Mowla]

I am aware of tons of 4x4x4 edge swap formula on web.
But does someone knows one which is super-super-cube-safe, i.e., directly solves the configuration below?

Spoiler: image of supercube safe PLL parity case

I just encountered this yesterday. But I don't want to mess up other pieces.
Thanks!

Besides all of the PLL parity algorithms I put in the wiki and marked as "safe", if you know Stefan's PLL parity algorithm r2 F2 U2 2R2 U2 F2 r2, which also works for the 5x5x5, you can basically do it twice like so (I need to add this to the wiki ) to not affect centers.
(r2 F2 U2 2R' U2 F2 r2)(l2 F2 U2 2L' U2 F2 l2)

 

[xuancong84]

Besides all of the PLL parity algorithms I put in the wiki and marked as "safe", if you know Stefan's PLL parity algorithm r2 F2 U2 2R2 U2 F2 r2, which also works for the 5x5x5, you can basically do it twice like so (I need to add this to the wiki ) to not affect centers.
(r2 F2 U2 2R' U2 F2 r2)(l2 F2 U2 2L' U2 F2 l2)

Oops, your solution is super-cube-safe, but not super-super-cube-safe, because it spoils the interior 2x2x2 too much as shown below:

Do you know someone else who is good at this? Thanks!

 

[Christopher Mowla]

Oops, your solution is super-cube-safe, but not super-super-cube-safe, because it spoils the interior 2x2x2 too much as shown below:

Spoiler

Do you know someone else who is good at this? Thanks!

What puzzle are you solving? I never heard of super-super-cube safe before. Did you try 2R' F U' R F' U 2L 2R U' F R' U F' 2L' from the wiki? That alg should not affect the inner 2x2x2, if my understanding is correct.

 

[xuancong84]

What puzzle are you solving? I never heard of super-super-cube safe before. Did you try 2R' F U' R F' U 2L 2R U' F R' U F' 2L' from the wiki? That alg should not affect the inner 2x2x2, if my understanding is correct.

Great, this one works perfect! Thanks!

 

[EvanCahill]

I need an algorithm to permutate the bottom layer edges of a 4x4. I use a centers last method and this is the side opposite the side I already completed. The current algorithm I use is L B L' F' B F L B' L but it's very slow and takes a lot of time. B=Bottom and the cube is held with one correctly permutated corner in left back.

 

[Randomno]

I need an algorithm to permutate the bottom layer edges of a 4x4. I use a centers last method and this is the side opposite the side I already completed. The current algorithm I use is L B L' F' B F L B' L but it's very slow and takes a lot of time. B=Bottom and the cube is held with one correctly permutated corner in left back.

If B = bottom does that mean the alg is actrually L D L' F' D F L D' L?

 

[EvanCahill]

Yes

 

[Bindedsa]

Yes

Are you sure that last move is not supposed to be L'?

 

[EvanCahill]

Yes it is I'm sorry

 

[Animorpher13]

what is a good alg for a diag swap on the bottom for 2x2 ortega without a cube rotation?

 

[penguinz7]

what is a good alg for a diag swap on the bottom for 2x2 ortega without a cube rotation?

R U' R' U' F2 U' R U R' D F2 R2

 

[TDM]

R U' R' U' F2 U' R U R' D F2 R2

I prefer L F' R U2 R' U F' R U2 R' U R U2 R2. I can sub-1.5 it easily and can sub-1 it without the last three moves (for diag swap on U).

 

[mark49152]

Best 4x4-friendly OCLLs that 1. preserve CP, and 2. swap corners on one diagonal.

 

[kirtpro]

Requesting F2L cases where piece(s) in FR slot and need to go BR
and piece(s) in BR going to FR

Eg:
R' F R F' R' U' R

 

[ottozing]

Requesting F2L cases where piece(s) in FR slot and need to go BR
and piece(s) in BR going to FR

I'll try and think of a few that aren't obvious.

R' F R F' R' U R U' R' U' R
F' R' U' R F

Are there like any specific cases you need?