ZBLL Case Breakdown #2

ZBLL Case: y2 R U2 R D R' U2 R D' R U' R U' R' U2 R

Breakdown:

Part 1: y2 R U2 R D

• y2: This is a 180-degree rotation of the entire cube, turning it upside down.

• R: This is a single move that rotates the right face clockwise by 90 degrees.

• U2: This is a 2-move sequence that rotates the entire cube's top layer (top face and top layer of edges) twice.

• R: This is a single move that rotates the right face clockwise by 90 degrees.

• D: This is a single move that rotates the bottom face clockwise by 90 degrees.

Effect of Part 1: Part 1 performs a setup to prepare the cube for the next moves. It rotates the right face, performs a double rotation on the top layer, and rotates the bottom face.

Part 2: R' U2 R D'

• R': This is a single move that rotates the right face counterclockwise by 90 degrees.

• U2: This is a 2-move sequence that rotates the entire cube's top layer (top face and top layer of edges) twice.

• R: This is a single move that rotates the right face clockwise by 90 degrees.

• D': This is a single move that rotates the bottom face counterclockwise by 90 degrees.

Effect of Part 2: Part 2 helps to bring the cube back to a more familiar orientation after the previous setup moves. It restores the right face position and undoes the previous bottom face rotation.

Part 3: R U' R U' R' U2 R

• R: This is a single move that rotates the right face clockwise by 90 degrees.

• U': This is a single move that rotates the entire cube's top layer (top face and top layer of edges) counterclockwise by 90 degrees.

• R: This is a single move that rotates the right face clockwise by 90 degrees.

• U': This is a single move that rotates the entire cube's top layer (top face and top layer of edges) counterclockwise by 90 degrees.

• R': This is a single move that rotates the right face counterclockwise by 90 degrees.

• U2: This is a 2-move sequence that rotates the entire cube's top layer (top face and top layer of edges) twice.

• R: This is a single move that rotates the right face clockwise by 90 degrees.

Effect of Part 3: Part 3 performs a sequence of moves that swaps the front-right and back-right edges while also rotating the right face and top layer.

Similar to the first case breakdown, it should be noted that the unsolved corners should be placed towards the back side of the cube so that this algorithm, when executed, can solve the ZBLL case as intended.