4-Look Last Layer

Completing the last layer using four steps or 'looks'. It is generally broken down into 2-look OLL (orientation of edges, followed by orientation of corners) and 2-look PLL (permutation of corners, followed by permutation of edges). Achieving 4LLL requires knowledge of 17 algorithms or 14 excluding mirrors. While progressing from 4LLL to 2LLL a speedcuber will typically learn all 21 PLLs first to achieve a 3-look last layer. Eventually, learning the final 57 OLL cases will achieve the 2-look last layer used in full Fridrich.

2-Look OLL

• Step 1: Orientation of Edges. This requires the use of one of 3 algorithms:
  1. to flip adjacent edges
  2. to flip opposite edges
  3. to flip all four edges
• Step 2: Orientation of Corners. (AKA OCLL) Requires the use of 7 algorithms (6 excluding mirrors), to solve the following OLL cases:
  1. T
  2. Bowtie
  3. Headlights
  4. Sune
  5. Anti-Sune
  6. H
  7. Pi

2-Look PLL

• Step 1: Permutation of Corners. Requires 3 algorithms (2 excluding mirrors), to carry out:
  1. clockwise 3-corner cycle (A-perm a)
  2. anticlockwise 3-corner cycle (A-perm b)
  3. diagonal corner swap (any of Y-Perm, V-Perm, E-Perm, N-Perm)

• Step 2: Permutation of Edges. Uses 4 algorithms (3 excluding mirrors):
  1. clockwise 3-edge cycle (U-perm a)
  2. anticlockwise 3-edge cycle (U-perm b)
  3. opposite edges swap (H-Perm)
  4. adjacent edges swap (Z-Perm)

External Links

• cubefreak.net 4 Look Last Layer