4x4 parity occurs on the last layer of a 4x4, where you get a case that is impossible to get on a 3x3 so you need a specific algorithm to solve it.  PLL parity specifically occurs because two adjacent edge pieces are swapped diagonally with 2 other adjacent edge pieces.  Generally you can't recognize it until you are at the PLL stage of solving.

PLL Parity case 1:

This swaps the 2 edges opposite each other.

Perform the algorithm with Yellow on top.

r2, U2, r2, Uw2, r2, u2

PLL Parity case 2:

This swaps the 2 edges adjacent each other. Perform the algorithm with Yellow on top.

(R' U R U' ) r2, U2, r2, Uw2, r2, u2, (U R' U' R )

DOWNLOAD Print Friendly PDF - Full 4x4 Parity Guide

 Rw BOTH Right Layers r INNER Right Layer Uw BOTH Top Layers u INNER Top Layer X Turn the cube clockwise around the X-Axis X' Turn the cube anti-clockwise around the X-axis

Fauzi Kamal

Can you make a video this algorythm ini 6×6 , 8×8 and 10×10 please?

DUB

4×4 is little hard

Devin

These Are EXTREMELY GOOD!!

Speedy hamster

Got an impossible case in desperate need of help

makkauhijau

niceee

bjghj

very good

MA

The diagrams are a bit misleading/confusing since the color illustrations that show the parity condition are top views but the illustrations of movements in the algorithm are front views. Nothing explicitly tells you the view angle was changed in the diagrams. This is good enough for those who understand the letters, but I figured the point of the movement diagrams was to make the algorithms more accessible to people who don’t.

I❤️kubez

Very impressive and happy to cheat on a 4×4

Cubey

This is so helpful !!!!!!!!!!!!!!!!!!!!!!!!!!

Vivaan

These algs lower my times

Daksh

I already know how to solve parity but this alg is much easier .

B-cuber

Wdym? Algorithm 2 works perfectly fine

Samuel

I dont really understand what to do in some cases. Like on case 2 of PLL parity i got confused. My point is, could u make it more clear please?

Micah Bohon

This is so helpful. Thanks so much.

djhy

parity case 2 doesn’t work

cuber

Really cool algorythms. Now i know how to solve parity without a resolve :)

K

which way should the cube face for this ?