The "Request an Alg" Thread

[Daniel Lin]

I am learning beginners method on 4x4, and i need a good last 2 edge pairs alg. anybody know some easy ones?

you don't need a specific alg for L2E. You can just put them both on the E layer, slice over, flip the edge, and slice back.
If you're looking for an edge flipping alg, pick one of these
(R U R' U') F' U F
R U R' (F R' F' R)
(F' U' F U) R U' R')
F' U' F (R' F R F')
(F R' F' R) F' U F
(R' F R F') R U' R'

 

[TreacherousToast]

I need an easy to remember OLL parity alg for the 4x4. anybody got one?

 

[Christopher Mowla]

I need an easy to remember OLL parity alg for the 4x4. anybody got one?

I'm not sure if "adjacent double parity" is acceptable, but I just made a video showing probably the easiest edge parity algorithm (which preserves both centers and dedges) to memorize! Let me know what you think! The alg is in the video description, if you want to skip watching the video, but I recommend watching to get the background and a head start for memorizing.

 

[Daniel Lin]

I need an easy to remember OLL parity alg for the 4x4. anybody got one?

I would suggest just using the alg that everybody else uses
Rw2 B2 U2 Lw U2 Rw' U2 Rw U2 F2 Rw F2 Lw' B2 Rw2

 

[shadowslice e]

I would suggest just using the alg that everybody else uses
Rw2 B2 U2 Lw U2 Rw' U2 Rw U2 F2 Rw F2 Lw' B2 Rw2

And also make sure you alternate the hands which do U2s

 

[Brest]

I need an easy to remember OLL parity alg for the 4x4. anybody got one?

r U2 x r U2 r U2 r' U2 l U2 r' U2 r U2 r' U2 r' <-- click to see animation

Except for the last move, each wide turn is followed by U2. There is 1 rotation after the first pair of moves. Apart from a single Lw move in the middle, the rest of the wide moves are Rw. Simplified it looks like this:

r U2 x
r U2
r U2
r' U2
l U2
r' U2
r U2
r' U2
r'

Then group it how you like to execute it. My basic execution looks like this:

r U2 x
r U2 r U2 r' U2
l U2
r' U2 r U2 r' U2 r'

 

[mafergut]

I would suggest just using the alg that everybody else uses
Rw2 B2 U2 Lw U2 Rw' U2 Rw U2 F2 Rw F2 Lw' B2 Rw2

I just realized I don't use the alg that everybody else uses. I use the alg that @Brest has suggested.

 

[sqAree]

I just realized I don't use the alg that everybody else uses. I use the alg that @Brest has suggested.

Same here and so do lots of other cubers. I think there are two standard algs for 4x4 OLL parity.

 

[Lazarus Holl]

Spoiler

So yea, I was doing a solve and I ran into that, and was wondering how I could insert the white corner, to force an OLL skip.

 

[4Chan]

U R' D' R U' R' D R

 

[SimonV]

I need an easy to remember OLL parity alg for the 4x4. anybody got one?

https://alg.cubing.net/?puzzle=4x4x..._Rw_U2_Lw-_U2_Rw_U2_Rw-_U2_x-_U2_Rw2&type=alg

 

[One Wheel]

I've got an FMC case that should be painfully simple, but I need one last alg. Two adjacent edges need to be flipped. All the pieces are in place, just flipping the two edges. It's the weekly comp scramble on here, and I got a 58 move solution in an hour, which is about typical for me, but I had another go to see what I could do with a little more time and I ended up with two adjacent flipped edges and a U move from solved in 27 moves. I guess a PLL skip isn't as good as an OLL skip, but I'm still pretty excited about this solution even if it doesn't count for anything.

 

[Sitkhom]

F U D R2 U2 R' U R U R2 D' F'
Optimal.
27+12=39 turns solution, nice!

 

[One Wheel]

F U D R2 U2 R' U R U R2 D' F'
Optimal.
27+12=39 turns solution, nice!

+ U2 = 40 Thanks! Now I've just got to figure out how to come up with that on my own. And I suppose in the grand scheme even 40 isn't really all that competitive, especially when it's a lucky solve, but I think I'm getting better.

 

[Lid]

More for speed, 13 htm, R' U2 R2 U R' U' R' U2 r U R U' r'

 

[Solvador Cubi]

I have looked through lists of algs around here and have not found what I'm looking for so I'm posing it to the community.
https://www.speedsolving.com/wiki/index.php/OLL#OLL_23
https://www.speedsolving.com/wiki/i...DB?mode=view&view=default&puzzle=3&group=COLL

The following simple 8 move algs orient 2 corners and preserve edge orientation and use only sexy move and sledge hammer. nice.

Blinkers on Left (r U R' U') (r' F R F') (8)

Bowtie from */_ F' (r U R' U') r' F R (8)


I have not seen such a great one for the headlights case, though.
I was hoping to find one that's 12 moves or fewer, because any more than that and 2 sunes can solve it with 14 moves.

This is the best I've found that is decent, but has an inverse sexy move.

Headlights on Back (R U' R' U) F' (L F' L' F ) F (R' F R F') (13)

Is there such an alg?

 

[AlphaSheep]

One of my favourites for headlights is this one:
Headlights on the front: R2 D R' U2 R D' R' U2 R'
A good source of algorithms is AlgDB.net

 

[Solvador Cubi]

Yes, Thanks AlphaSheep. I
meant to include a link to that site and to this page also:
https://www.speedsolving.com/wiki/i...e=view&view=default&puzzle=3&group=OLL&cid=23

I've seen several short ones that are pretty good, but I'm mainly wondering if there are any consisting of Sexy Moves and/or Sledgehammers.

 

[Solvador Cubi]

I found one! After hours of pulling out pairs and inserting them back in different ways and in different slots....

This algorithm will correct OLL case #23 (headlights), which preserves edge orientation but does not preserve permutation of either corners or edges.

F (R U R' U') (R' F R F') F’ (L' U2 L) (12, 14)

I think it has a nice feel and flow and it uses a right hand sexy move, a sledge hammer and a left hand sexy move variation.
(with a couple extra F turns in there, too.)

woohoo!

I added it to the wiki on this page: https://www.speedsolving.com/wiki/i...e=view&view=default&puzzle=3&group=OLL&cid=23

 

[TheSpeedCuber890]

Hi there, I'm wanting to know a good Gc and Gd Perm. Thanks.