How to Solve 4x4 Parity
OLL vs PLL Parity
OLL Parity
On the 4x4 there is only one OLL case which is shown above.
This is when 2 pieces of the last layer are orientated incorrectly.
PLL Parity
There are a few PLL parity cases on the 4x4. These are when the last layer is orientated correctly but they are in the incorrect position to solve using the regular 3x3 method.
OLL ALG 1
- r2 B2 U2 l U2 r' U2 r U2 F2 r F2 l' B2 r2
PLL ALG 1
- (Uu)2 (Ll)2' U2 l2' U2 (Ll)2' (Uu)2
PLL ALG 2
- L2 D (Ff)2 (Ll)2 F2 l2 F2 (Ll)2 (Ff)2 D' L2
PLL ALG 3
- (Uu)2 (Ll)2 U2 l2 U2 (Ll)2 (Uu)2 F' U' F U F R' F2 U F U F' U' F R
PLL ALG 4
- (Uu)2 (Ll)2 U2 l2 U2 (Ll)2 (Uu)2 R U' L U2 R' U R L' U' L U2 R' U L' U
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