Step 21/25 · CFOP

PLL: corners only

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The edges are right and only the corners move: Aa, Ab and E.

Goal

Place the corners with one algorithm when every edge is already right.

What full PLL is

Full PLL puts every top-layer piece in place with one algorithm. There are 21 cases.

T perm and Y perm are already in 2-look PLL: corners. Ua, Ub, H and Z are in 2-look PLL: edges. The other fifteen are split into 4 lessons, plus one lesson for practicing recognition.

How to learn it

Learn one group at a time. For cases you have not learned yet, keep using 2-look PLL.

Words used here

  • Headlights: a side's two top corners have the same color.
  • Neighboring-color or opposite-color edge: the middle sticker of a side with headlights, compared with the headlights. Opposite colors are red and orange, green and blue.
  • Pair: a corner and the edge next to it share a color.
  • Full row: all three top stickers of a side match.

How to recognize it

Every side's middle sticker lines up after a U turn. Headlights on one side: three corners cycle (Aa or Ab). No headlights: E perm.

How to hold the cube

White face on the bottom, top already all yellow. Each case's grip is shown under the controls. The player adds a U at the start or end when needed.

The main idea

Aa and Ab mirror each other, and both use x and D2. The x at the start and x' at the end turn the whole cube and back.

Next lesson

Go to PLL: neighboring corner swaps.

Step 1 / 11

x: Whole cube: turn 90°, front face goes up

All edges are right; three corners cycle. Headlights at the back, and the front has a pair on the left.

Hold the headlights at the back.

Step 1 of 11: x. Whole cube: turn 90°, front face goes up