3x3 · PLL
3x3 PLL Ua algorithm
3x3 PLL Ua algorithm: 7 turns, opening with y2 M2 U. Case recognition, the complete sequence, and practical execution notes.
Permute the last-layer pieces while preserving their orientation and the first two layers.
Ua belongs to the EPLL 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 F F; R: R B R; B: B L B; L: L R L. The letters identify colors by their reference faces. Piece locations (position ← home piece): UL ← UR, UB ← UL, UR ← UB.
Execute the algorithm
y2 M2 U M U2 M' U M2
The opening is y2 M2 U; the final segment is M' U M2. This version contains 7 face, wide, or slice turns and 1 whole-puzzle rotation.