# Four-Look Last Layer

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• Two-Look OLL and PLL split each of the two steps of Fridrich last layer into two, corners and edges. As this greatly reduces the number of algorithms required, these serve as perfect stepping stones before advancing to full PLL and OLL.

## Two-Look OLL

These algorithms are all taken straight from my full OLL. One of three algorithms (OLL 1, 44, 45) corrects the edge orientation, and then corner orientation is corrected while preserving the edge orientation using one of seven algorithms (OLL 21-27). For edge orientation, any algorithm with the same effect on the edges can be used; 1, 44, and 45 are just particularly easy to perform.

#### Edge Orientation

 Codes Pattern Algorithm How It's Done a (1) RU2'-R2'FRF'U2'-R'FRF' b (44) FwRUR'U'F'w c (45) FRUR'U'F'

#### Corner Orientation

 Codes Pattern Algorithm How It's Done 21 RU-R'URU'R'UR-U2'R' 22 RU2'-R2'U'R2U'R2'-U2R 23 R2DR'U2RD'R'U2'R' 24 RwUR'U'R'wFRF' 25 Lw'U'L'U-RU'LUx' 26 R'U'RU'R'U2R 27 RUR'URU2'R'

## Two-Look PLL

#### Corner Permutation

If the corner permutation is not solved, we can always AUF (Adjust U Face) to correctly place exactly two corners. We therefore only have two distinct cases: adjacent swap and diagonal swap. If there are two adjacent corners sharing the same color on the same side, we are in the adjacent swap case. Bring these to the back and rotate the bottom two layers until the UFL corner is matched. We recognize this as a 3-cycle:

 Codes Pattern Algorithm How It's Done n4Acw xR'UR'DDRU'R'DDR2x'

We never need the other direction.

If the corners do not share a color on any side, we are in the diagonal swap case. You can use any of the several diagonal-swap PLL algorithms. I recommend the Y-perm:

 Codes Pattern Algorithm How It's Done n15Y FRU'R'U'RUR'F'-RUR'U'R'FRF'

#### Edge Permutation

With the corners matched, there are only four possible edge permutation cases.

 Codes Pattern Algorithm How It's Done n1aU R'UR'U'-R'U'-R'URUR2 n2aU R2U'R'U'RURURU'R n5Z UR'U'RU'RURU'R'URUR2U'R'U n6H M2'UM2'U2M2'UM2'