3x3 · COLL
3x3 COLL L 4 algorithm
3x3 COLL L 4 algorithm: 8 turns, opening with y F R'. 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.
L 4 belongs to the L group in COLL.
Recognize this starting position
In the inverse-derived training position, the upper-face color points upward at these corner positions: UFL, UBR. 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: L F; R: U R; B: B U; L: F B. The letters identify colors by their reference faces.
Execute the algorithm
y F R' F' Rw U R U' Rw'
The opening is y F R'; the final segment is R U' Rw'. This version contains 8 face, wide, or slice turns and 1 whole-puzzle rotation.