The last layer in 4 looks

Full CFOP needs 78 algorithms. The 4LLL (4-Look Last Layer) does the same job with 16, by splitting each step in two.

It is the bridge nearly every cuber crosses, and many stay on it for a long time: executed well, it is more than enough to get under a minute.

Look	What you do	Cases
1	Orient the edges → the yellow cross	3
2	Orient the corners → the yellow face	7
3	Permute the corners	3
4	Permute the edges	4

You already know look 1: it is step 4 of the beginner method, unchanged.

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Look 1 — orient the edges

F R U R' U' F'

Dot → L → bar → cross. See step 4 for how to hold the cube in each case.

The dot
3 times

The L
2 times

The bar
1 time

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Look 2 — orient the corners

Seven cases. They are exactly the seven OLL where the cross is already done, so nothing will have to be relearned the day you move to full OLL.

Sune
R U R' U R U2 R'

Anti-Sune
R U2 R' U' R U' R'

Double Sune
R U2 R' U' R U R' U' R U' R'

Pi
R U2 R2 U' R2 U' R2 U2 R

Headlights
R2 D' R U2 R' D R U2 R

Sock
r U R' U' r' F R F'

Bowtie
F' r U R' U' r' F R

Start with these two

Sune and Anti-Sune are mirrors of each other and between them cover a good share of the cases. The other five can in fact all be solved by applying Sune twice — slower, but it gets you through while you learn them.

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Look 3 — permute the corners

Three cases. Spot the pairs of identical colours on the sides (the "headlights"): the face that has a pair is the one whose corners are already correctly placed.

A-perm a
x R' U R' D2 R U' R' D2 R2

A-perm b
x R2 D2 R U R' D2 R U' R

E-perm
x' R U' R' D R U R' D' R U R' D R U' R' D'

The A-perms rotate the cube

The x at the start is a whole-cube rotation: you tip the cube backwards before executing, and you finish holding it differently. That is normal.

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Look 4 — permute the edges

Four cases, and the best algorithms on the cube: short, fast, and built on the M slice.

U-perm a
M2 U M U2 M' U M2

U-perm b
M2 U' M U2 M' U' M2

H-perm
M2 U M2 U2 M2 U M2

Z-perm
M' U M2 U M2 U M' U2 M2

These four are the ones to learn first

They are short, they come up all the time, and they are part of the full 21 PLL. No effort wasted.

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And then

Once the 4LLL is fluent, the logical next step is full PLL: you replace looks 3 and 4 with a single algorithm. You already know 7 out of 21.

Full OLL comes last: it replaces looks 1 and 2, and you already know 7 out of 57.