3x3 · ZBLL
3x3 ZBLL Pi 49 algorithm
3x3 ZBLL Pi 49 algorithm: 16 turns, opening with y R U2. 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 49 belongs to the Pi 5 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 B U; R: F L F; B: U R L; L: U F U. The letters identify colors by their reference faces.
Execute the algorithm
y R U2 R' U2 R' U' F U R2 U' R' U R U' R' F'
The opening is y R U2; the final segment is U' R' F'. This version contains 16 face, wide, or slice turns and 1 whole-puzzle rotation.