CFOP · Pasul 4

PLL — 21 de Algoritmi

Referință completă de algoritmi PLL pentru cubul Rubik. Învață PLL în 2 priviri pentru începători sau stăpânește toți cei 21 de algoritmi pentru PLL complet într-o privire.

21 cazuri — referință completă

The home stretch

OLL already turned the whole top face one solid color. PLL has exactly one job left: slide every last-layer piece into its correct position without touching its orientation. When the last piece clicks home, the cube is solved — provided your F2L stayed intact.

PLL algorithms look long, and that is on purpose. By this stage every piece is already oriented, so an algorithm has the least freedom to move things around: it must cycle the pieces you want while returning every other piece untouched. That politeness is what makes the sequences long — not difficulty.

21 beats 57. Deciding which full step to learn first? PLL is the smaller mountain — only 21 cases against OLL’s 57. Front-load it.

Climb the ladder: 4 looks → 3 looks → 2 looks

You do not need all 57 OLL cases before you start using full PLL. Harris lays out an explicit path from the beginner method to one-look CFOP:

4-look (beginner)
Edge cross, then orient corners, then position corners, then position edges — four small algorithm families. This is the beginner last layer.
3-look (the bridge)
Learn just the 7 OLL cases where every edge is already flipped to orient the corners in one look, then do full PLL in one look. Cross → 7-case OLL → PLL. This is the rung most worth climbing next.
2-look (CFOP)
Full 57-case OLL in one look, then full 21-case PLL in one look. The expert last layer.

Recognition: line up first, then look

Harris’s recognition advice is an action, not a static glance: rotate U to bring as many already-solved pieces home as you can, then read what is left over. Pre-aligning makes the remaining mismatch jump out — and it is the only way to tell mirror cases (Ua vs Ub, Ja vs Jb, the four G-perms) apart reliably.

Solid bar → edges only

A full bar of three matching stickers across a side means those corners are home. You are in an edge-only case — a U-perm, H, or Z.

Headlights → adjacent swap

Two matching corners with a different center color between them (“headlights”) are a solved pair. The case is an adjacent-swap family: T, J, or R.

No headlights → diagonal swap

No headlights anywhere means a diagonal swap — Y, V, or N — or a G/E-perm. Diagonal swaps never show headlights.

See the two you’ll use most

Watch the two most common PLLs run on a real cube. The T-perm is the single most-used case and the backbone of 2-look PLL; the Ua-perm is the classic edge 3-cycle. The top face is already one color — PLL only slides the pieces into place.

T-perm — the adjacent-swap workhorse

RUR'U'R'FR2U'R'U'RUR'F'

Ua-perm — the edge 3-cycle

R2U'R'U'RURURU'R

Learn it by family, not by flashcard

Harris does not present 21 loose pictures — he buckets them into seven bite-size families that share a shape and a feel. Learn one member, internalize the trigger, then derive its mirror. The families are the study plan.

Edge perms (Ua, Ub, H, Z)

All four corners home; only edges cycle. The fastest family — done as M-slice flicks.

M2UM2U2M2UM2

Corner perms (Aa, Ab)

All four edges home; a single diagonal corner 3-cycle. Built on the R' U R' D2 trigger.

xR'UR'D2RU'R'D2R2x'

R-perms (Ra, Rb)

One adjacent corner swap plus an edge 3-cycle. A solved block on one side; the mirror is the other.

J-perms (Ja, Jb)

An adjacent corner pair and adjacent edge pair swap on one face — the most beginner-friendly combined perm.

RUR'F'RUR'U'R'FR2U'R'U'

N-perms (Na, Nb)

Two diagonal swaps crossing — the hardest pair. Long by design: two whole columns trade.

G-perms (Ga–Gd)

A 3-corner cycle paired with a 3-edge cycle. Four mirror-confusable cousins, all driven by a wide-U turn plus a re-grip rotation.

The rest (T, F, V, Y)

The high-value standalones — including the T-perm, the most-used PLL of all.

RUR'U'R'FR2U'R'U'RUR'F'

All 21 verified cases. Filter by family. Tap a card to copy the algorithm.

PLL 01 intermediate

Ua-Perm

edges only

Trei muchii sunt deplasate ciclând într-o direcție. O muchie este deja rezolvată.

R2U'R'U'RURURU'R

P 1/18 11 moves

PLL 02 intermediate

Ub-Perm

edges only

Trei muchii sunt deplasate ciclând în direcția opusă lui Ua. O muchie este deja rezolvată.

R'UR'U'R'U'R'URUR2

P 1/18 11 moves

PLL 03 intermediate

H-Perm

edges only

Toate cele patru muchii sunt deplasate. Muchiile opuse sunt schimbate. Cubul are un model simetric din toate cele patru laturi.

M2UM2U2M2UM2

P 1/72 7 moves

PLL 04 intermediate

Z-Perm

edges only

Toate cele patru muchii sunt deplasate. Muchiile adiacente sunt schimbate într-un model în Z.

M2UM2UM'U2M2U2M'

P 1/36 9 moves

PLL 05 intermediate

Aa-Perm

corners only

Trei colțuri ciclează într-o direcție în timp ce toate muchiile rămân rezolvate.

xR'UR'D2RU'R'D2R2x'

P 1/18 11 moves

PLL 06 intermediate

Ab-Perm

corners only

Trei colțuri ciclează în direcția opusă lui Aa în timp ce toate muchiile rămân rezolvate.

xR2D2RUR'D2RU'Rx'

P 1/18 11 moves

PLL 07 advanced

E-Perm

corners only

Toate cele patru colțuri sunt deplasate în perechi diagonale. Toate muchiile sunt rezolvate.

x'RU'R'DRUR'D'RUR'DRU'R'D'

P 1/36 17 moves

PLL 08 intermediate

T-Perm

edges + corners

Două colțuri adiacente trebuie schimbate. Colțurile față-dreapta și față-stânga sunt schimbate, plus două muchii.

RUR'U'R'FR2U'R'U'RUR'F'

P 1/18 14 moves

PLL 09 intermediate

Y-Perm

edges + corners

Două colțuri diagonale unul față de altul trebuie schimbate împreună cu două muchii. Nicio piesă adiacentă nu corespunde.

FRU'R'U'RUR'F'RUR'U'R'FRF'

P 1/18 17 moves

PLL 10 advanced

F-Perm

edges + corners

Colțurile față-dreapta și față-stânga se schimbă, și două muchii pe fețele din față/dreapta se schimbă.

R'U'F'RUR'U'R'FR2U'R'U'RUR'UR

P 1/18 18 moves

PLL 11 advanced

V-Perm

edges + corners

Două colțuri diagonale unul față de altul se schimbă, plus două muchii adiacente se schimbă. Model complex fără piese adiacente corespunzătoare.

R'UR'U'yR'F'R2U'R'UR'FRF

P 1/18 15 moves

PLL 12 intermediate

Ja-Perm

edges + corners

Colțul față-dreapta se schimbă cu colțul spate-dreapta, muchia din față se schimbă cu muchia dreaptă.

L'U'LFL'U'LULF'L2ULU

P 1/18 14 moves

PLL 13 intermediate

Jb-Perm

edges + corners

Colțul față-dreapta se schimbă cu colțul spate-dreapta, muchia din față se schimbă cu muchia din spate.

RUR'F'RUR'U'R'FR2U'R'U'

P 1/18 14 moves

PLL 14 intermediate

Ra-Perm

edges + corners

Două colțuri și trei muchii sunt deplasate într-un ciclu pe partea dreaptă. O muchie este în poziția corectă.

LU2L'U2LF'L'U'LULFL2U

P 1/18 14 moves

PLL 15 intermediate

Rb-Perm

edges + corners

Oglinda Ra. Două colțuri și trei muchii deplasate, o muchie corectă.

R'U2RU2R'FRUR'U'R'F'R2U'

P 1/18 14 moves

PLL 16 advanced

Na-Perm

edges + corners

Ambele perechi de colțuri diagonale se schimbă deodată. Toate cele patru colțuri sunt deplasate cu toate cele patru muchii de asemenea deplasate.

RUR'URUR'F'RUR'U'R'FR2U'R'U2RU'R'

P 1/72 21 moves

PLL 17 advanced

Nb-Perm

edges + corners

Similar cu Na dar în oglindă. Toate piesele deplasate într-un model reflectat.

R'URU'R'F'U'FRUR'FR'F'RU'R

P 1/72 17 moves

PLL 18 advanced

Ga-Perm

edges + corners

Trei colțuri și trei muchii sunt toate deplasate într-un model de ciclu complex.

R2UR'UR'U'RU'R2U'DR'URD'

P 1/18 15 moves

PLL 19 advanced

Gb-Perm

edges + corners

Trei colțuri și trei muchii deplasate. Oglinda modelului Ga.

R'U'RUD'R2UR'URU'RU'R2D

P 1/18 15 moves

PLL 20 advanced

Gc-Perm

edges + corners

Trei colțuri și trei muchii deplasate. Similar cu Ga dintr-un unghi diferit.

R2U'RU'RUR'UR2UD'RU'R'D

P 1/18 15 moves

PLL 21 advanced

Gd-Perm

edges + corners

Trei colțuri și trei muchii deplasate. Similar cu Gb dintr-un unghi diferit.

RUR'U'DR2U'RU'R'UR'UR2D'

P 1/18 15 moves

Common mistakes

Finger tricks that make PLL fast

M-slice flicks drive the edge perms. The H-perm (M2 U M2 U2 M2 U M2) and the U-perms are meant to be flicked with the slice, not turned face by face.

Wide-U plus a re-grip is the signature of every G-perm: a double-layer u turn cycles the layer as one fluid motion, and the baked-in rotation re-presents a comfortable R/U grip mid-algorithm.

Rotations are part of the trigger. When an algorithm contains a cube rotation, treat it as one continuous motion with the moves around it — not a separate step. And memorize with your hands: PLLs decompose into familiar triggers (the sexy move R U R' U', the R U R' F' opener, the F … F' sandwich), so the hand chunks them rather than reciting them.

Introducere în CFOP →

Going further

Once full PLL is fluent, Harris points straight at the expert horizon:

COLL — orient and permute the corners together in one look when edges are already oriented, so PLL collapses to a pure edge case.
ZBLL — orient and permute the entire last layer in a single algorithm, given oriented edges. The far horizon.
VH / ZB during F2L — influence the last layer while inserting the final F2L pair so you arrive at a known, smaller LL subset.

Algoritmi OLL

Revizuiește orientarea feței de sus înainte de PLL

Introducere în CFOP

Înțelege cum se încadrează PLL în metoda CFOP completă