#### CandyCentral

##### Member
How should I hold the cube when executing a Z perm? Because sometimes it becomes a H perm... Help please? Thank you.

#### fun at the joy

##### Member
which alg do you use?

#### Zain_A24

##### Member
Putting the edges you want to swap on the front and left should solve it. You must be putting them on the front and right instead. Also, depends on the algorithm used.

#### PetrusQuber

##### Member
There are two ways to do a Z Perm, one solves it, and one transforms into an H Perm. Your alg is needed by the way, to help out.
As @Zain_A24 described, that is the correct way to use the M2 U’ M2 U’ M’ U2 M2 U2 M’ U2 algorithm. It’s mirror is done the way described second.

#### Pyjam

WARNING: The is for VERY advanced Speedcubers

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#### ProStar

##### Member
I use M' U M2 U M2 U M' U2 M2 (U') for Z perm. Is that a bad alg?

#### Cubingcubecuber

##### Member
I use M' U M2 U M2 U M' U2 M2 (U') for Z perm. Is that a bad alg?
I use it too, I think it is about as good

#### riselikeakangaroo

##### Member
just insert another edge piece as you did with the rest, and insert the edge piece the right way

Spoiler: wrong edge on RF, algorythm: R U' R' U' F' U F' U' R U' R' U' F' U F'
In my case, all the edge piece are yellow in one of the side, what to do?

#### WarriorCatCuber

##### Member
In my case, all the edge piece are yellow in one of the side, what to do?
Can you explain a little better ? I don't understand

#### ProStar

##### Member
In my case, all the edge piece are yellow in one of the side, what to do?
You can just put a yellow piece where the flipped edge is, then put the non-yellow edge back in, except not flipped

#### PEN.gu1nCXI

##### Member
Hi Guys,

I am sub25 with CFOP and just finished learning full OLL (and PLL a while ago). At this point, other than improving lookahead and F2L efficiency, and drilling algs, should I consider learning COLL? Any advice is appreciated!

#### ProStar

##### Member
Hi Guys,

I am sub25 with CFOP and just finished learning full OLL (and PLL a while ago). At this point, other than improving lookahead and F2L efficiency, and drilling algs, should I consider learning COLL? Any advice is appreciated!
At that speed, probably not. If you really enjoy learning algs, then you can learn COLL if you want, but it's definitely not something you need to do for a while, if at all. It's basically just working on F2L. Try to find creative ways to pair up things; even if you feel like you're doing a case fine, there may be a better/alterante way to do it. The best way to do this is really think about F2L during slow solves, and playing around with other ways to possibly pair them up. I learned some cool ways to pair things up because I've been tinkering with intuitive ZBLS.

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