3x3 · COLL
3x3 COLL Pi 6 algorithm
3x3 COLL Pi 6 algorithm: 12 turns, opening with R' F' U'. Case recognition, the complete sequence, and practical execution notes.
Solve the last-layer corners with the last-layer edges already oriented; edge permutation may remain.
Pi 6 belongs to the Pi group in COLL.
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 upper corner stickers left to right when facing that side gives F: F U; R: L L; B: U B; L: U U. The letters identify colors by their reference faces.
Execute the algorithm
R' F' U' F U' R U S' R' U R S
The opening is R' F' U'; the final segment is U R S. This version contains 12 face, wide, or slice turns and no whole-puzzle rotations.