01Two recognition decisions cover every orientation
The first look ignores corners and asks whether the top edges form a dot, L or line. The second look assumes the Cross exists and identifies the oriented-corner pattern using top and side stickers.
Because every last layer fits this structure, a beginner gains a guaranteed method before memorizing all 57 full OLL cases. The algorithms also reappear inside the full set.
02A practice sequence that builds the skill
Learn line and L edge orientation first, then the dot as a composition of edge algorithms. Add Sune and Anti-Sune before the remaining corner cases because they are common and teach useful R U finger patterns.
Use setup moves for one family, randomize the U face and name the case before executing. Practice holding the cube so the line is horizontal and the L sits in the expected back-left orientation.
03How to measure improvement
Track the pause before each look and execution accuracy. The goal is not just fast algorithms; the transition from edge Cross to corner case should happen without rotating the entire cube.
Once recognition is consistent, measure how often a full solve produces one-look OLL by chance or by a newly learned full case. Add full OLL gradually without abandoning the reliable two-look fallback.
04Common mistakes and what to learn next
Common errors include holding the L in the wrong corner, treating the line as vertical, recognizing only the top face and confusing Sune with Anti-Sune from a rotated angle.
Study the Sune and Anti-Sune case pages, then move to the OLL hub when the complete two-look set is automatic.