Orlow's 4x4 Solution

Parity Fixes

Home
Notation aand Pre-solve info
Solution
Parity Fixes

A parity is an event that is impossible on a 3x3 cube, but happens on the 4x4, preventing you from solving it.  This page will show you how to get rid of the parities.

Parity 1: Edge is flipped

This is the annoying of the two parities.  Like you would get a cross on the 3x3, this parity makes it a T instead.  To fix this turn one inner face of the flipped edge, turn the edges so you can replace them with the 3 edge cycle, then swap the centers back with the algorithm from the first page.

flippededge.gif

turnface.gif

Parity 2: 2 Swapped Corners

This one is much easier to fix.  Place the two corners that need to be swapped in the bottom fron, and do this algorithm:

cornerswitch.jpg

The top face will now be slightly scrambled again.  Use your 3x3 technique to get the cross on top again.  This time, two edges will need to be fixed:

switchededges.gif

All you need to do is hold the cube so one of the edges is in the front top, and the other right behind it in the back top, and do this algorithm:

edgeflipper.jpg

Once you have that, just cycle and rotate the corners as necessary like on a 3x3 cube and you're done!  Congratulations!

How to solve the Rubik's Revenge-
Brian Orlow