The "Request an Alg" Thread

[ProStar]

View attachment 11473
For the case above but rotated y so that it is facing at me, does anyone have any rotationless algs? I know I can rotate and solve easily, but I was curious/interested in any cool rotationless algs, especially any using m-slices or r wide moves.

Thanks for the help.

R' U' R2 U R'

 

[Deleted member 51471]

R' U' R2 U R'

He said when it was facing him, on the y side (green)

 

[ProStar]

He said when it was facing him, on the y side (green)

Oh, ok. My mistake

 

[Artic]

u' R U R' u
or wide move free : U2 R U2 R' U R' U2 R L' U' L

The u' R U R' u algorithm doesn't solve the case I'm talking about. Your alg solves when the edge is in the right spot and the corner is a U away. Do you have an updated alg for the case I'm referring to. Anyone have any m-slice or wide move algs for this case?

 

[ProStar]

I think just doing F' U' F2 U F' or rotating and doing R' U' R2 U R' would be best

 

[Artic]

I think just doing F' U' F2 U F' or rotating and doing R' U' R2 U R' would be best

Yeah, but I'm really looking for a rotationless alg. Anything with m-slice or wide moves is fine. I just want some different options.

 

[ProStar]

Yeah, but I'm really looking for a rotationless alg. Anything with m-slice or wide moves is fine. I just want some different options.

There are times in F2L where the best option is to rotate. Based on how easy the alg is to rotate, I doubt anything will be nearly as fast. I also wasn't able to find any good slice/wide algs.

 

[Artic]

No, there are always options. Anyone else care to help me with this case?

 

[Brest]

View attachment 11473
For the case above but rotated y so that it is facing at me, does anyone have any rotationless algs? I know I can rotate and solve easily, but I was curious/interested in any cool rotationless algs, especially any using m-slices or r wide moves.

Thanks for the help.

R' F2 R F2
= Lw' U2 Lw F2
F U' M' U2 M F'
r U' R' U2 M F
L' U2 R U2 R' L

 

[brododragon]

just curious, how did you figure it out so quickly?? do you use any kind of program? or you just made it up??

Cube explorer is good for beginners like me who want something visual.

I know this isn't really the thread for this, but, quick question, how would one go about generating an alg set?

 

[ProStar]

Cube explorer is good for beginners like me who want something visual.

I know this isn't really the thread for this, but, quick question, how would one go about generating an alg set?

I asked this question in the OAQT Puzzle Theory, this is what the response was:

1. Get a sheet of paper.

2. List down all the positions of cubies that you care about and aren't fixed, be they edges, corners, (for big cubes / other puzzles) centres, whatever. (E.g. for VLS, you don't include the two pieces that form the last F2L pair even though they aren't solved. These two pieces are constant across all the different VLS cases.)

3. Write down literally every possible cubie that can be in the first position.

4. If it fits on the same sheet of paper, for each of the possibilities thus far enumerated, write down every possible cubie that can be in the second position. If not, get more paper.

5. Repeat with the third, fourth, etc. positions until you're done.

6. Now get yet another sheet of paper (or possibly many more sheets of paper) and group cases together into equivalence classes, if necessary. E.g. for PLL, you don't quite care if your N perm has aligned blocks at FR/BL, at FL/BR, or if it has no aligned blocks at all.

(Optionally, replace "paper" with any electronic version if you don't like killing trees.)

If this seems like a lot of work, you can shortcut steps 3-5 with some combinatorics knowledge. (You should quickly start seeing some patterns as you work this out; try to convince yourself of the multiplication principle. But also watch out for parity, and if relevant (e.g. RU 2-gen), other constraints.) Step 6 can be "shortcut" with group theory but it's usually not too onerous to just brute-force your way through it. You can also rearrange/split step 6 to be anywhere else in the list to make your life easier, e.g. listing ZBLL by first enumerating CLL, grouping them by AUF equivalence, then enumerating the possible edge permutations, then grouping together by equivalent cases again (for the few symmetric CLL cases).

 

[brododragon]

I asked this question in the OAQT Puzzle Theory, this is what the response was:

What about impossible cases? And would you just have to generate every case seperately, or are there programs that can do the entire set at once?

 

[Deleted member 51471]

Is there a set of algs like TTLL but with an extra edge instead of an extra corner ?

 

[Cody_Caston]

Anyone know an alg for oh vperm and rperm (i know its not specific)

 

[Brest]

Anyone know an alg for oh vperm and rperm (i know its not specific)

http://algdb.net/puzzle/333/ohpll

 

[Cubingcubecuber]

Is there a set of algs like TTLL but with an extra edge instead of an extra corner ?

HKPLL

 

[PetrusQuber]

Regripless alg for T ZBLL 40?

 

[kubesolver]

Regripless alg for T ZBLL 40?

I tried to find something for this: http://algdb.net/puzzle/333/zbll-zbllt/zbllt40
and found something like this:
r U' r2' D F2 r2 D r2' U' F r U' r' F2 r

 

[Brest]

Regripless alg for T ZBLL 40?

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

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

 

[xyzzy]

Regripless alg for T ZBLL 40?

R U R2 F U' R2 U' R2 U F' U R2 U2 R'
R' U' R2 D R' U2 R D' R' U2 R' U' R U R' U R

(I just use the R U2 R D one and regrip, though.)