Parity cases

[penfold1992]

i just got a 4x4x4 cube (and a 5x5x5 and 2x2x2 but... im gna leave the 5x5x5 for now and 2x2x2 is ok)

and i solved it without use of instuctions and i can already solve a 3x3x3 pretty well however im still using a beginner methoc.

ive solved it a few times where i hav got what i think is Parity cases? and im quite confused for a few reasons.
sometimes i see r means turn both right faces clockwise... however sometimes it means just turn the inner right :confused:
also sometimes it says there are only 2 parity cases and othertimes there are about 6 :confused:

is there anyway someone can clear this up 4 me.

 

[mcciff2112]

R means outer layer.
r means inner layer.
Rw or (Rr) means both layers.

 

[Ellis]

The difference between inner slice turns and double layer turns in parity algorithms is usually that the inner slice turns make that algorithm pure. In other words, if the only thing in the cube that is unsolved is whatever the parity alg is meant to fix, then do the one with inner slice turns. But usually how people handle OLL parity is they fix it right when they get to the last layer, so you can use double layer turns in that case because you aren't worried about screwing up the rest of the last layer. The PLL parity should be done with inner slice turns, since it's the last (or one of the last) things you fix, and doing it with double layer turns will likely mess up more than your last layer.

As for the number of parity cases, there are really only 2, OLL and PLL. OLL will flip one edge group, and PLL will permute 2 edge groups. Every parity fits into one of these groups. If you end the cube and all you have is two corners that need to be swapped, just do the PLL parity to swap 2 edges and you will be left with a normal PLL case. If you have 2 adjacent edge groups that need to be permuted, set them up opposite to each other to do the normal opposite edge swap and then undo the setup moves.

 

[Crumbshaw]

Or........ you can watch Dan Brown's (pogobat) Tutorial.
I hope this helps you It will explain about the 4x4's New Notations http://www.youtube.com/watch?v=5o8Vdn0LeGo&feature=related

 

[Ellis]

Or........ you can watch Dan Brown's (pogobat) Tutorial.
I hope this helps you It will explain about the 4x4's New Notations http://www.youtube.com/watch?v=5o8Vdn0LeGo&feature=related

arghhhhhhhhhhhhhhh

No need to watch dan browns videos in order to understand notation. In fact... no need to watch dan brown videos period.

 

[Yes We Can!]

This alg works for 4x4, 5x5, 6x6 and 7x7 (all big cubes)