4-Look Last Layer

Completing the last layer in four steps or looks. It is an intermediate step between the beginner LBL method and learning full Fridrich. 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 16 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

This OLL system is used to orient all the pieces on the last layer as described in the Jessica Fridrich method, you do not need to know all 57 OLLs to use 2-look OLL, rather the system is divided up. By first orienting the edges (three cases), then orienting the corners (7 cases), orientation of all pieces on the last layer is completed.

• 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 2 algorithms , to carry out:
  1. adjacent corner swap (A-perm)
  2. 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)

See Also

• Last Layer
• Layer By Layer
• Fridrich Method
• 3-Look Last Layer
• 2-Look Last Layer

External Links

• cubefreak.net 4 Look Last Layer