Rouxvolution
// guide ── cmll · two-look

Two-Look CMLL

Solve the four top corners in two looks. First orient them, then permute them.

  • Step 1: orient. This step orients U-layer corners so they show their U-face colour on top.
  • Only U-layer stickers are relevant for this step.
  • There are 7 algorithms to learn.
  • Step 2: permute. The corners are now fully solved.
  • There are 2 algorithms to learn.

Two triggers to learn first

Triggers are short sequences of moves that appear often in algorithms. Almost every orientation algorithm is built from these two triggers.

Sexy move

Solution R U R' U'

Its inverse, U R U' R', is called the inverse sexy move.

Sledgehammer

Solution R' F R F'

Its inverse, F R' F' R, is called the hedgeslammer.

Step 1: Orient the corners

Focus only on the top layer color to recognize the case. Use triggers to remember algorithms.

U: F (sexy) F'

Solution F R U R' U' F'

T: (sexy)(sledge)

Solution R U R' U' R' F R F'

L: (hedge)(inverse sexy)

Solution F R' F' R U R U' R'

Pi: F (sexy)(sexy) F'

Solution F R U R' U' R U R' U' F'

H: F (sexy)(sexy)(sexy) F'

Solution F R U R' U' R U R' U' R U R' U' F'

Sune

Solution R U R' U R U2 R'

Sune is the most widely recognized name for an algorithm in cubing.

Antisune

Solution L' U' L U' L' U2 L

Step 2: Permute the corners

There are 3 cases based on which corners we need to swap: solved (no swap needed), adjacent swap, diagonal swap.

You can recognise the case by looking for headlights: a face whose two top-corner stickers are the same colour. Adjacent swap has one set of headlights, diagonal swap has no headlights.

Adjacent swap (J Perm)

Solution R U R' F' R U R' U' R' F R2 U' R'

Diagonal swap (Y Perm)

Solution F R U' R' U' R U R' F' R U R' U' R' F R F'

Better Permutation Recognition

It is possible to recognize the permutation case from looking at front and right side of the cube without having to rotate to see if there are any headlights. We recognize three types of color cases:

  • same: both stickers have the exact same colour (e.g. green/green)
  • opposite: stickers have colours of opposite centers (e.g. green/blue)
  • adjacent: stickers have colours of adjacent centers (e.g. green/red)

We look at two pairs of stickers — one pair on the front face, one pair on the right face. We use these decision rules:

  1. Both pairs same → permutation is already correct.
  2. One pair same (headlight) → adjacent case.
  3. One pair adjacent-colour → adjacent case.
  4. Otherwise (both pairs opposite) → diagonal case.

Where to next

←  All guides