# [Help Thread] Roux Discussion and Help

Discussion in 'Cubing Help & Questions' started by LamentConfiguration, Apr 24, 2008.

1. ### macncheeseMember

38
4
May 14, 2018
What techniques do you use to practice first block? It takes me one minute to build both my blocks! I think I will switch to zz because I can't get sub 1 for three months!

2. ### 1001010101001Member

918
165
Dec 18, 2017
Australia
WCA:
2017WENR01
1. Square.
2. Pair / insert pair
Example: (block on DR)
Scramble R U D R' F L' F' B2
F Uw B/ Square
L U2 L'/ pair
F2/ insert
Another way is to not learn Roux yet but start with LMCF and if you like how it goes then switch to around when you are faster.
For first block practice I give myself a block limit (14 moves beginners) then slowly decrease it by 1 when you get comfortable with your move limit. The Gods Number for FB is 9 and SB 13(I think)

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Nov 9, 2016
4. ### ZaTankMember

So I decided to make the switch... where do i start?

5. ### macncheeseMember

38
4
May 14, 2018
Block are pretty intuititve. You don't really need a tutorial. Check algs on kian's site if you really want to learn thru algs. Cmll you can check Geneva's cubing process. L6E check kian's video tutorial

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May 14, 2018
7. ### SuneMember

15
0
Mar 15, 2009
Yet another question on color neutrality. I have searched and read the old threads debating pros and cons of it and can understand both sides' arguments and personally lean to the side of "having easier recognition over saving 1-2 moves", but not sure how I should approach it in pure practical terms.

I picked up Roux several days ago after a 9-years break from cubing and was experimenting with different color neutrality subsets. A plain y2-neutrality (predetermined L/R colors, white always on D) seems the easiest by far. As a former white-cross CFOP solver, my hands just "know" the correct edge orientations while doing F2B, and my second block is the fastest this way.

If I try to add x2-neutrality (white/yellow D), my second block slows down quite a lot. I have to remember an extra bit of information - what's on bottom - and still tend to make wrong pairs and put them in wrong slots. I guess this problem goes away with practice.

If I try y-neutrality (fixed white D, any side color), my F2B are fine, but I have to make a pause during EO to check current L/R colors (and still mess them up from time to time). I guess this problem also goes away with practice.

Going for the most common x2+y seems too much hassle for me, I'd rather have more automatic solve even if it's marginally less optimal. So, my questions are:
Is y2 neutrality (2 blocks) way too limiting in practice?
Of the 4-block neutralities, x2 y2 (worse SB) or y (worse EO), which one gets easier faster?

2,815
760
Jun 16, 2015
Hampshire, England
Well, I think your long term goal should really be x2 y neutrality in which case y might be better though I won't hesitate to point out that x2 y is only a couple weeks of getting used to before it becomes pretty automatic (at least in my experience) so it may still be worth just starting out with x2 y tbh.

9. ### SiTeMaRoMember

18
1
Feb 12, 2016
Targu Mures, Romania
Does anyone know what is the minimum move count for ANY first block? Like CFOP's cross (8 moves or less).

10. ### muchachoMember

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May 27, 2015
Spain
WCA:
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davidalejosalarcia

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Dec 18, 2017
Australia
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9

12. ### CJRPMember

1
0
Jul 11, 2018
Hello everybody.

I can solve the cube with corners first almost always under two minutes, my record being 1:13 once I was lucky. I have also times of 1:19, 1:20, and 1:21, nothing new, I know.

I use this "foolproof" solution which basically involves four algorithms and a fifth one I learned elsewhere.

http://www.alchemistmatt.com/cube/altrubik.html

This algorithm below is to put the corners in the correct place. It has to be used once or twice.

U-1 F U L-1 U L U-1 F2

This other algorithm below is for putting the corners in the correct position. It has to be used from one to several times. I am aware there is a set of seven algorithms to use the proper one only once, but let's leave that for now.

U-1 F2 U F U-1 F U F2

Both algorithms require the solved corners back an the ones to solve in certain positions in the front.

Now the issue comes in. I tried to switch to Roux and I want the pair of two algorithms for solving the corners, which has to be different from that pair above since the first algorithm removes one edge from one of the 3x2x1 blocks.

NOW THE QUESTIONS

Could you experienced cubers tell me which are the two algorithms that suffice for Roux corners and that don't mess up any of the 3x2x1 block edges, even if those algorithms have to be executed more than once?

Bonus question:

Is there any pair of algorithms that preserves the second algorithm which doesn't mess up edges but adds another algorithm for placement as the one for orientation I have works?

Feel free to have a look at the website I linked if you want to understand the two algorithms I mentioned better.

Sorry for the long message, but I hope it is at least clear enough. Two sufficing algorithms for Roux corners, if possible keeping the second one above.

Last edited by a moderator: Jul 11, 2018
13. ### xyzzyMember

1,175
624
Dec 24, 2015
Hold the cube so that the solved blocks are on the bottom-left and bottom-right.

First alg: L' U R U' L U R' (swaps the corners on the right side of the top face)
Second alg: R' U2 R U R' U R (actually the same as your alg, but executed at a different angle)

The answer to "is there an algorithm for this" is probably yes, but I'm not sure what exactly you're looking for. A picture would help.