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Lesson 3 of 3

Optional techniques · Lesson 3

Recognize the final three-edge cycle

Recognize a three-edge cycle and distinguish it from an unfinished corner permutation.

Before you start

The top is yellow, the first two layers are solved, and top corners are aligned.

How to hold your cube

Yellow up. Put the completely solved side at back with a whole-cube rotation.

1. Separate corner and edge recognition

PLL means permuting the last layer: moving oriented pieces into the right positions. This lesson practices the three-edge cycle you learned in the beginner course. It is not a catalog of all PLL cases.

Check the two top corner stickers on every side. They must match their side center. If they do not, complete corner positioning first.

2. Find the fixed edge

One side should be completely solved. Rotate the whole cube sideways to place it at back. The other three top edges need to cycle around the remaining positions. Using U here would move the aligned corners, so keep the layers in place during the regrip.

Before turning, name where each edge belongs using its side color. This trains recognition beyond merely counting wrong stickers.

3. Execute and inspect the cycle

R U' R U R U R U' R' U' R2

In the prepared case, one application solves the edges. In the opposite cycle direction, two applications of the same sequence solve them. Keep the same back side for the second application.

If no side is solved, one application creates a solved side. Regrip to put it at back, then continue with one or two cycles. That is a different starting case, so inspect between applications.

4. Practice recognition before speed

Copy the prepared setup on a solved cube and name the three destinations before turning. Repeat with the algorithm itself as your setup to create the opposite cycle direction.

When you recognize the cycle consistently, reduce pauses inside the sequence. Add new PLL cases gradually through a dedicated reference such as J Perm’s beginner PLL collection.

Need a reminder of the move notation?

R right · L left · U top · D bottom · F front · B back. A plain letter is 90° clockwise looking directly at that face. An apostrophe (′) reverses it; 2 means 180°. Keep the front fixed during an algorithm.

Watch, then try

Work through an example

Use one move at a time first. This prepared case teaches a specific action; use the lesson’s setup instructions to recognize when it applies to your own scramble.

Watch one worked example

Track the three moving edge pieces and the back edge that stays put. This is a recognition drill for the same cycle used at the end of the beginner method.

Example grip: yellow up · blue front · red right at the start. Follow any written whole-cube rotations.

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Loading 3D cube…

Drag to inspect other faces. Arrow keys rotate the view when the cube is focused.

Copy this exact example on your own cube

Start with a solved 3×3, yellow up and blue front. Apply the setup below from left to right. This creates the example’s starting position. Keep this separate from the ongoing scramble you are solving through the course.

R2 U R U R' U' R' U' R' U R'

Then follow the lesson sequence. If your cube’s color scheme differs, match the piece relationships using your own colors.

Compare the starting position and the result
Before the example
After the full sequence

Drag each cube to inspect its other faces.

Explain it to yourself

Check your understanding

What if the edge cycle goes the other way?

Now use your own cube

Your turn

Identify the solved side and name the three misplaced top edges before playing the example. Then solve the opposite cycle by applying the same sequence twice.

Open a 3×3 Digital Cube for practice

Opens in a new tab so you can keep this lesson beside your practice. Check the lesson goal yourself; the Digital Cube does not grade it.

If you get stuck

I cannot find a solved side.

Check corner alignment first. With corners correct, perform one edge cycle, find the side it creates, and put that side at back before continuing.

Before moving on

Check your result

3×3 lesson result: All six faces solved. Every face is one color. Check the back and bottom as well as the faces you can see here.

Your cube at this stage

All six faces solved

Every face is one color. Check the back and bottom as well as the faces you can see here.

Confirm these on your cube. Watching the animation alone does not complete the lesson.

Check every item when you can do it yourself.

Scan your cube

Scan the QR code with your phone to open Cube Solver, then use the app to scan your cube. Keep this page open while you scan.

Tap “Open scanner” to scan your cube in the app on this phone. Return to this browser for the solution.

  1. Open your phone’s camera.
  2. Scan the QR code.
  3. Follow the instructions in Cube Solver.
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  1. Open your phone’s camera.
  2. Scan the QR code.
  3. Follow the instructions in Cube Solver.
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