3x3 · PLL
3x3 PLL Gb algorithm
3x3 PLL Gb algorithm: 15 turns, opening with D 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.
Gb 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: F B R; R: B F F; B: R L B; L: L R L. The letters identify colors by their reference faces. Piece locations (position ← home piece): UFR ← UBR, UBR ← UFR, UF ← UB, UL ← UR, UB ← UL, UR ← UF.
Execute the algorithm
D R' U' R U D' R2 U R' U R U' R U' R2
The opening is D R' U'; the final segment is R U' R2. This version contains 15 face, wide, or slice turns and no whole-puzzle rotations.