OLL (Orient Last Layer)

OLL is the third phase of CFOP. Its goal is to orient all last-layer pieces so the top face shows one uniform color (typically all yellow), without yet caring about the side stickers. The full OLL algorithm set has 57 algorithms, one per unique orientation case, averaging around 9 moves. Most intermediate CFOP solvers first learn a reduced 2-look OLL that handles the same 57 cases using only 10 algorithms at the cost of one extra algorithm lookup per solve.

Two-look OLL splits the phase into edge orientation first, then corner orientation. The three edge cases (dot, L-shape, line) are handled with variants of the short edge-flip algorithm:

F R U R' U' F'

This is the canonical F-sexy-F’ pattern and is worth learning as a motion family because the inner R U R' U' (the sexy move) recurs throughout the full OLL set. The seven corner cases include the two most-recognized last-layer patterns, Sune and its mirror Antisune:

Sune:     R U R' U R U2 R'
Antisune: R U2 R' U' R U' R'

The remaining corner cases (H, Pi, L, T, U) are handled by distinct short algorithms or by setup-plus-Sune combinations. Learning path: beginners take 2-look OLL first and stay with it well past sub-20 times; full OLL typically saves 1-2 seconds on top of a strong 2-look execution, and it is worth learning in batches of 5-7 algorithms at a time rather than all 57 at once.