Download Cube Solver

Scan the QR code with your phone or tablet to open its app store.

QR code to download Cube Solver
Download on the App StoreGet it on Google Play
Lesson 2 of 2

Get ready · Lesson 2

Learn the turns and the trigger

Read face-turn notation and perform the four moves used for first-layer corners.

Before you start

You can identify corners and choose a white reference corner.

How to hold your cube

Keep one front face fixed. White will stay down in the solving lessons.

1. The letters identify faces as you hold the cube

R is right, L left, U up, D down, F front and B back. The letters identify faces by position, regardless of colour. Keep the same face towards you throughout the sequence.

On a 2×2, each face turn moves one layer of four corners. The far layer stays still relative to your grip.

2. Suffixes tell you how far and which way

A letter on its own means a 90° clockwise turn as you look directly at that face. An apostrophe means a 90° anticlockwise turn. A 2 means a 180° turn in either direction.

Move Meaning
R Turn the right face clockwise as viewed from the right
U' Turn the top face anticlockwise as viewed from above
D' Turn the bottom face anticlockwise as viewed from underneath
R2 Turn the right face halfway round

3. Learn the insertion routine

R U R' U'

Perform the four moves in order and finish the final U′. This small routine is called a trigger. You will use it only after putting a target corner directly above its home.

For now, repeat it six times. Six repetitions return the cube to its exact starting state, whether solved or scrambled. Use this drill to check your turns. A scrambled cube will still be scrambled at the end.

4. Keep turns separate from regripping

Turning U moves only the top layer. Rotating the whole cube changes which faces are at the front, right and back. Later, when you twist the yellow corners, use U turns between corners with no whole-cube rotation. Practise telling the two apart now.

Watch, then try

Work through an example

Start by stepping through one move at a time. This prepared example shows a specific action. Use the lesson’s setup instructions to recognise when to use it on your own scramble.

Watch one worked example

Repeat the four-move trigger six times on this scrambled cube. At the end, every piece returns to its starting position. In the next lesson, you’ll start solving the white layer.

Example grip: Start with yellow on top, blue at the front and red on the right. Follow any written instructions for rotating the whole cube.

0 / 24

Loading 3D cube…

Drag to inspect other faces. Use the arrow keys to rotate the view when the cube has keyboard focus.

Copy this exact example on your own cube

Start with a solved 2×2, with yellow on top and blue facing you. Apply the setup moves below from left to right to create the example’s starting position. Keep this example separate from the scramble you’re solving throughout the course.

R U R' F2 D L2 B U2

Then follow the lesson sequence. If your cube has a different colour scheme, use the relationships between your own colours to identify the equivalent pieces.

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 does U′ mean?

Now use your own cube

Your turn

Try R then R′, U then U′, and U2 twice. Then repeat R U R′ U′ six times from any starting state and check that the cube returns to that state.

Open a 2×2 Digital Cube for practice

Opens in a new tab so you can keep this lesson open while you practise. Check for yourself whether you’ve met the lesson goal. The Digital Cube doesn’t assess your result.

If you get stuck

The drill does not return to the starting state.

Count six complete four-move repetitions, check the apostrophes, and keep the same front face throughout.

Before moving on

Check your result

2×2 lesson result: Return to the same scramble. Six complete triggers restore the scramble you started with. Begin solving the white layer in the next lesson.

Preparation · no solving yet

Return to the same scramble

Six complete triggers restore the scramble you started with. Begin solving the white layer in the next lesson.

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

Tick each item once 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.
Open scanner
Connect another phone
  1. Open your phone’s camera.
  2. Scan the QR code.
  3. Follow the instructions in Cube Solver.
Waiting for your scan