3x3 · PLL
3x3 PLL Ra algorithm
3x3 PLL Ra algorithm: 15 turns, opening with y R U'. Case recognition, the complete sequence, and practical execution notes.
Permute the last-layer pieces while preserving their orientation and the first two layers.
Ra belongs to the Adj Swap group in PLL.
Recognize this starting position
In the inverse-derived training position, the upper-face color points upward at these corner positions: UFR, UFL, UBL, UBR. Upper edges with that color facing up: UF, UL, UB, UR. Reading each side’s top row left to right when facing that side gives F: L B L; R: F F R; B: B R F; L: R L B. The letters identify colors by their reference faces. Piece locations (position ← home piece): UFR ← UFL, UFL ← UBL, UBL ← UFR, UF ← UB, UB ← UR, UR ← UF.
Execute the algorithm
y R U' R' U' R U R D R' U' R D' R' U2 R'
The opening is y R U'; the final segment is R' U2 R'. This version contains 15 face, wide, or slice turns and 1 whole-puzzle rotation.