The "Request an Alg" Thread

[cubersmith]

N(a) perm thats sub 1.5-able

 

[Hershey]

N(a) perm thats sub 1.5-able

http://www.youtube.com/watch?v=l691I2zEfZw

 

[vcuber13]

3-3 swap that preserves cp

 

[cubersmith]

http://www.youtube.com/watch?v=l691I2zEfZw

Thanks very much

 

[5BLD]

Optimal diagonal corner swap and optimal adjacent corner swap without regard to UL UR DF DB UF UB edges, or the M slice centres, please.

Basically, optimal Roux adjacent and diagonal corner swap.

I don't mind F or B moves at all, but common sense should tell when there's too much.

Six-Flip:

UL+UR edges at UB/UF: MU2M'UM'UMUM
UL/DF: M'UMUM
UR/UF: MU'MUM

And of course mirror those when necessary. I've been using this for years and I'm still not completely used to it. I often have to pause to find UL and UR. It may be best if you stick with one sequence instead of giving freedom to the centers to save moves.

Two-Flip (Two misoriented edges at UF+UB):

UL+UR edges at UF/UB: M'UMU'M'UM'
UF/DB: M'U2M'U'M
UL/UR: M'UMU'M'UM'
DF/DB: M'UMU'M'UM'
UL/DF: M'U'MUM

Thanks a lot!

I have actually been messing around with misoriented centres.

 

[Lid]

3-3 swap that preserves cp

Sq-1 EO I assume

1,0/3,0/3,0/-1,-1/-3,0/-3,0/0,1
or
1,0/2,-1/4,1/-1,-1/-3,0/-3,0/0,1

 

[Christopher Mowla]

Question about 4x4 edge pairing, Does someone has an alg that when you have double parity on 4x4 while edge pairing you can solve all 4 edges in an alg and not repeating the same alg twice?

The term double parity refers to OLL Parity + PLL parity. Based on you saying, "repeating the same alg twice," suggests that you are referring to the disjoint edge pairing cases.

If I am understanding you correctly, there are many cases for pairing up 4 dedges in one algorithm.
Assuming you want the algorithm to affect the 4 dedges in M, here is one algorithm from cube exlporer:
Rw F2 Rw2 U2 Rw' U2 x' U2 Lw U2 Rw2 F2 Lw'

Also, this can happen in three dedges (obviously).
For example,
[Rw2 U' F' L U' F': Rw2].

If I am understanding you correctly, and I have not provided an algorithm for your specific case, please show me which one you're looking for.

 

[Reinier Schippers]

The term double parity refers to OLL Parity + PLL parity. Based on you saying, "repeating the same alg twice," suggests that you are referring to the disjoint edge pairing cases.

If I am understanding you correctly, there are many cases for pairing up 4 dedges in one algorithm.
Assuming you want the algorithm to affect the 4 dedges in M, here is one algorithm from cube exlporer:
Rw F2 Rw2 U2 Rw' U2 x' U2 Lw U2 Rw2 F2 Lw'

Also, this can happen in three dedges (obviously).
For example,
[Rw2 U' F' L U' F': Rw2].

If I am understanding you correctly, and I have not provided an algorithm for your specific case, please show me which one you're looking for.

Thanks a lot

 

[Nestor]

What is a good alg. for swapping ONLY two adjacent edges on the 4x4 (orientation is not important)?

 

[Nestor]

Thanks cmowla, but now I see I wasn't clear enough. I want to swap to adjacent edges which are next to each other on the same side, without disturbing the rest of the cube (although the orientation of the edges is not an issue). I mean: swap both pieces that make an edge pair.

I'm trying to solve a trebjers 4x4 and my solution involves edge swapping on the final stage but I lack efficient algorithms for it.

 

[Nestor]

Anyone?

 

[Athefre]

I'm not sure if I've seen one. Google doesn't show results for "Trebjers".

 

[Yuxuibbs]

N perms and G perms that only use R and U and/or F? can have z moves but not too many (the one i found had 4 z and z' moves)

 

[MaeLSTRoM]

Thanks cmowla, but now I see I wasn't clear enough. I want to swap to adjacent edges which are next to each other on the same side, without disturbing the rest of the cube (although the orientation of the edges is not an issue). I mean: swap both pieces that make an edge pair.

I'm trying to solve a trebjers 4x4 and my solution involves edge swapping on the final stage but I lack efficient algorithms for it.

Swapping 2 edges in an edge pair is Just OLL parity. if by in an edge pair you mean UFr and UFl for example.

 

[MaeLSTRoM]

N perms and G perms that only use R and U and/or F? can have z moves but not too many (the one i found had 4 z and z' moves)

I have a RUF Nb perm: R' U R U' R' F' U' F R U R' F R' F' R U' R
RUF Ga perm: R2 u R' U R' U' R u' R2 F' U F
RUF Gb perm: F' U' F R2 u R' U R U' R u' R2
for the rest I use mirrors so I wont post them because they aren't what you want.
You wont get any algs that are just R and U because that wont affect Corner permutation.

 

[Sillas]

What method the best BLD-cuber uses?

 

[evogler]

What is the shortest (or braindead-simplest) algorithm that switches any 2 corners and any 2 edges (anywhere on the 3x3)?
I get a kick out of solving the cube using only one algorithm + conjugation. The easiest one for me so far is T-perm, but I don't really know any 2 edge + 2 corner sequences other than PLLs, and was wondering if there's something shorter/easier/interesting somewhere else on the cube.
Thanks!

 

[irontwig]

R' F R' u2 R F' R' u2 R2 F' or [R2:[R F R', u2]] F' is one of the shortest 2C2E swaps possible (in HTM).

 

[solved]

Easiest to memorize/simplest algorithm for swapping one set of diagonal corners for first look of 2 look pll

 

[Sa967St]

Easiest to memorize/simplest algorithm for swapping one set of diagonal corners for first look of 2 look pll

R U R' U (Jb perm) U' R U' R'