3x3 · ZBLL
3x3 ZBLL Pi 16 algorithm
3x3 ZBLL Pi 16 algorithm: 15 turns, opening with R U R'. Case recognition, the complete sequence, and practical execution notes.
Solve the entire last layer in one sequence when its edges are already oriented.
ZBLL Pi 16 belongs to the Pi 2 group in ZBLL.
Recognize this starting position
In the inverse-derived training position, the upper-face color points upward at these corner positions: none. 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: R F U; R: L L R; B: U R L; L: U B U. The letters identify colors by their reference faces.
Execute the algorithm
R U R' U R2 D R' U' R D' R2 U R U2 R'
The opening is R U R'; the final segment is R U2 R'. This version contains 15 face, wide, or slice turns and no whole-puzzle rotations.