How to do ZB Parity? ZB in 4x4 & 6x6

[acrystal]

How is OLL Parity and PLL Parity done on ZB? Just the same a CFOP?

 

[AJT17]

How is OLL Parity and PLL Parity done on ZB? Just the same a CFOP?

How I personally recognise ZBLLs on 4x4 is by knowing 2-sided recognition methods. The most common is BH, but there are multiple recognition methods that offer the same. I don't know 2-sided for a lot of cases, but I've also just gotten the general recognition of the cases down, and I can usually tell when I have a parity case. Then at that point, I would either do parity or the alg it looks like, then parity after.
Because you can't tell if you have parity from just 2 sides, you need to look at a 3rd side in order to confirm the parity state. For solvers like Tymon, who is the best ZB 4x4 solver, he likely knows nearly all of the 2-sided angles for each ZBLL, so that's 4 different angles per case. For him, he probably recognises the ZBLL as normal; then he might look at a third side to confirm or just notice if he has parity while doing the ZBLL alg.
As for ZBLS, I would imagine solvers like Tymon would be able to know if they have OLL parity pretty quickly during last slot and from there choose any ZBLS alg that would orient the most edges. Then from there, doing OP and going into ZBLL.
Though I might be misconstruing some information, since I only know what I see from Tymon's videos, and I don't actually know how he does it. It's just my educated guess from my own journey of learning ZBLL and being a good 4x4 solver.

 

[OtaMota]

How is OLL Parity and PLL Parity done on ZB? Just the same a CFOP?

Idk about OLL P for ZBLS, but for but I think I can answer some extra stuff for PLL P for ZBLL, though AJ pretty much explained everything already.

It depends on which recognition method you use, but let’s use BH for this example, the one I am familiar with and I assume most top solvers do.

For 3x3, the top solvers can know the ZBLL from any of the 4 angles. The minimum you need though is just 1 angle, though if you get to the ZBLL and you don’t know how to recog from one of the remaining 3 angles, you may need to pre AUF into the angle you know for that OLL case

For 4/6, you will need to look at one more side. If you can only use BH for one angle on 3x3, you will need to learn how to do at least 1 more angle for 4x4. So you will need to learn how to recog ZB from at least 2 angles of the 4 total.

Now what you do is, let’s say on 3x3 there is a ZB where from one angle, the BH is a solved block, and from a U away, the BH is an H perm block. If you are doing 4x4, the first BH you see is that solved block, then there are 2 possibilities. If you do the U and see the H perm block as expected for 3x3, then you have no parity. However, if you see a different BH, then that means you have parity.

Edit: the above information is where you check for Corner Permutation while checking BH. It is possible to recog ZB without checking CP, but to do so, you need to recog an extra angle of BH. For 3x3, you will need to check 2 angles, and for 4x4, you will need to check 3.