Make a yellow cross on top with two short, almost identical algorithms.
Goal
Make a yellow cross on top. The side colors of the yellow edges do not need to match yet.
How to hold the cube
White layer on the bottom, yellow on top. Look only at yellow stickers on top and ignore the corners.
How to recognize it
The top always shows one of four shapes:
- A cross already: go to the next lesson.
- Only the yellow dot in the middle.
- An L shape: the center and two neighboring edges.
- A line: the center and two opposite edges.
Steps
- L shape: hold it at the back and left, then do
F U R U' R' F'.
- Line: hold it horizontal, then do
F R U R' U' F'.
- Dot: do
F U R U' R' F' once. The top becomes an L or a line, so continue as above.
Memory tips
The two algorithms differ only in the middle: U R or R U. Both start with F and end with F'.
Check before moving on
The top shows a yellow cross. The first two layers are still solved.
Common mistakes
- Holding the L the wrong way. The two yellow edges must be at the back and left.
- Holding the line vertical instead of horizontal.
- Worrying about the side colors of the edges. They do not matter yet.
4x4: OLL parity
If exactly 1 or 3 yellow edge pairs face up, no algorithm here can finish it. That is OLL parity: do the algorithm in the Parity lesson, then carry on with the yellow cross.
Next lesson
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