# Random Blindfold Cubing Discussion

#### CyanSandwich

##### Member
I see. So which U face buffer is best? I'm quite inexperienced with centre comms, and don't know what advantages each piece has.
The differences between them are really small, so I usually recommend using the same as your corner buffer. That way you can at least translate some of the comms.

TDM

#### Jacck

##### Member
IMO this is no scramble with parity: for me parity is, when you have an odd-number of edges and an odd number of corners (not counting the buffer). In OP you will have an odd number off perms for edges and for corners (and therefore after edges the two corners swapped which you'll have to fix somehow).

An easy scramble with parity is: U
Sometimes I solve blind with J-perm only (kind of OP light), UF<->UR and URF<->UBR. If I have an odd number of edges solved, the two corners must be swapped and I have to fix parity:
1. I do another J-perm that corrects the corners and they are there, where they have been after the scramble (so you could memo them in place). I also swap the edges which then are not in their right position anymore, but as I will have an odd number of J-perms to solve the corners, they will be swapped back in their right position at the end again.
2. I have memorized the corners swapped and "pre-looked" the fact, that they will be swapped after solving the edges. Then I will have an even number of J-perms for the corners and therefore no problem with swapped edges.

A parity-scramble will give you an odd-number of J-perms in total: in the first version you have odd perms for the edges, one for parity and odd perms for corners (odd+1+odd=odd). In the second version you have an odd number for edges and an even number for corners (odd+even=odd).

With J-perms for corners and M2 for edges I would do version 1: just another J-perm after solving the corners (to fix the edges), then do M2 for edges. This will need an odd number of M2 so I will add one in the end and will have the edge-buffer and edge-target swapped. Then I do a "parity-alg" that will swap the edge-buffer and edge target and the two corners.

When do I have parity?
If the scramble has a summ of turns with 90° or 270°! (like a single U)
And look at a J-perm R U2 R' U' R U2 L' U R' U' L (13*90°-turns!): it doesn't swap the pieces as I wrote before, it just looks like that in the end. In fact nearly the whole topface is rearranged and the middle piece is rotated ccw (U2+U'+U2*U*U'=U').

For 4bld: don't do OP before solving the centers (because they will be rotated) - and if the scramble has a summ of 90° or 270° for the inner-slices, there will be the wings-parity.

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#### TheGrayCuber

##### Member
1. I do another J-perm that corrects the corners and they are there, where they have been after the scramble (so you could memo them in place). I also swap the edges which then are not in their right position anymore, but as I will have an odd number of J-perms to solve the corners, they will be swapped back in their right position at the end again.
I would consider that extra J-perm that you do to be a parity alg, so you’re not really avoiding a parity alg, you’re just manipulating the method to make parity easier to deal with.

#### sqAree

##### Member
This was pretty bad, but the 2-cycles were all oriented together. If there were flips/twists integrated within them it would be just a little worse.
Maybe having parity would also be cool.

#### Ollie

##### Member
I think the worst scramble is having every single piece flipped or twisted

EDIT: actually nevermind, that would make edges really easy to memorize
And to execute, ((M' U')*4 y' x')*3 is really fast IMO.

#### Dylan Swarts

##### Member
Hey Guys. I need to know how to transition from OP corners to 3-style corners. My OP buffer is UBL but my 3style buffer will be UFR. How can I do this transition and still do M2 edges for now???

#### sigalig

##### Member
Hey Guys. I need to know how to transition from OP corners to 3-style corners. My OP buffer is UBL but my 3style buffer will be UFR. How can I do this transition and still do M2 edges for now???
I would recommend learning orozco for UFR corners. Of course you would also need to learn new corner parity algs. I think probably the best thing to do would be to learn corner parity algs that swap UFR+xyz corners and UF+UR edges. Then for M2 you should employ the UF/UR swap for parity scrambles.

U

#### Underwatercuber

##### Guest
Hey Guys. I need to know how to transition from OP corners to 3-style corners. My OP buffer is UBL but my 3style buffer will be UFR. How can I do this transition and still do M2 edges for now???
Just like graham said orozco is really great for this. I have a written tutorial here

#### Dylan Swarts

##### Member
I would recommend learning orozco for UFR corners. Of course you would also need to learn new corner parity algs. I think probably the best thing to do would be to learn corner parity algs that swap UFR+xyz corners and UF+UR edges. Then for M2 you should employ the UF/UR swap for parity scrambles.
so then after that I can easily transfer to 3Style corners later on?
And for edges? Can I just stay with M2 and then later direct to 3style?

U

#### Underwatercuber

##### Guest
so then after that I can easily transfer to 3Style corners later on?
And for edges? Can I just stay with M2 and then later direct to 3style?
You can transfer to 3 style pretty gradually and easy win orozco. For edges you could stick with M2 or you could switch to U2, Orozco or TuRBo to get the UF buffer.

#### Dylan Swarts

##### Member
You can transfer to 3 style pretty gradually and easy win orozco. For edges you could stick with M2 or you could switch to U2, Orozco or TuRBo to get the UF buffer.
I think I will go full Orozco then from there to 3style. thank you very much..

#### Martial

##### Member
Hey guys, I have a question about the way you chose your comms : what do you think is better between those algs and why?
[UR'UD:[D2, RU'R']] (setup into 9-moves comm)
[UR'U':[R'U'R, D2]] (setup into 8-moves comm)

#### Thom S.

##### Member
I have done a lot of sighted solves and no matter if there are even or odd edges/corners I never have to do the parity alg, and I really do not know how that is.
When you do sighted solves you probably just solved your corners and edges without memoing them at first. You won't get Parity with that because if you have an odd number of targets and no memo, so you accidentally swapped to even parity without noticing

#### BlurryZMan

##### Member
I have a question pertaining to memorizing. I've seen many people memorizing letters in pairs of two and associating a sound and image to them, and I started to make my own list of each letter pair (ex. bc, bd, etc.). I realized I have to make over 500 pairs; 506 I think, correct me if I'm wrong (no a, y, or z; and no doubles [ex. bb]). This seems like a tedious process and I'm not sure if this is the way I should be going about making my pairs.

#### Mike Hughey

##### Super Moderator
Staff member
I have a question pertaining to memorizing. I've seen many people memorizing letters in pairs of two and associating a sound and image to them, and I started to make my own list of each letter pair (ex. bc, bd, etc.). I realized I have to make over 500 pairs; 506 I think, correct me if I'm wrong (no a, y, or z; and no doubles [ex. bb]). This seems like a tedious process and I'm not sure if this is the way I should be going about making my pairs.
Yes, that's the way it is done. It is rather tedious, but it's nice once you have them finished!

#### Ollie

##### Member
I have a question pertaining to memorizing. I've seen many people memorizing letters in pairs of two and associating a sound and image to them, and I started to make my own list of each letter pair (ex. bc, bd, etc.). I realized I have to make over 500 pairs; 506 I think, correct me if I'm wrong (no a, y, or z; and no doubles [ex. bb]). This seems like a tedious process and I'm not sure if this is the way I should be going about making my pairs.
It sounds like a lot, but in reality you'll already have a pretty good idea what you might want to use. About 80-90% will be easy.

For example: FK, CK, PS, BJ are obviously rude words, which are actually better choices, because they're easier to remember.

BA, CW, SH and GF could all be animals. You can use friends' initials, famous people, or maybe just simple words.

Try a few solves where you choose letter pairs as you go, you'll be surprised about how much easier it is than you think. If you get stuck, you can try placing vowels in between two letters to make a word (for example, JM could be jim, jam, jem, etc.)

If the word is too hard, you can do a search and find lists that other cubers have made for inspiration. You can also try reading the blog post in my signature if you have no idea what I'm saying.

Good luck!