3x3 · COLL
3x3 COLL L 3 algorithm
3x3 COLL L 3 algorithm: 9 turns, opening with y R U2. 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 3 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: F B; R: U B; B: L U; L: F L. The letters identify colors by their reference faces.
Execute the algorithm
y R U2 R D R' U2 R D' R2
The opening is y R U2; the final segment is R D' R2. This version contains 9 face, wide, or slice turns and 1 whole-puzzle rotation.