3x3 · COLL
3x3 COLL S 2 algorithm
3x3 COLL S 2 algorithm: 11 turns, opening with y2 R 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.
S 2 belongs to the Sune group in COLL.
Recognize this starting position
In the inverse-derived training position, the upper-face color points upward at these corner positions: UFL. 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 U; R: L U; B: R U; L: F B. The letters identify colors by their reference faces.
Execute the algorithm
y2 R U R' U R2 D R' U2 R D' R2
The opening is y2 R U; the final segment is R D' R2. This version contains 11 face, wide, or slice turns and 1 whole-puzzle rotation.