7/27/2019 PLL With Recognition Aid.pdf

1/3

RCHG2010, IIT Kanpur

PERMUTATION OF LAST LAYER (PLL) Please Note:

- There are total 21 algorithms of which some you are already aware of by now. These algorithms help in reducing theprocess of Edge Permutation and Corner Permutation steps in solving the Last Layer in one single step known as

Permutation of Last Layer (PLL).

- Hence, the steps involved in solving the Last Layer are: 1. Edge Orientation 2. Corner Orientation (7 algorithms sentearlier) 3. PLL

- The main difficulty in using PLL while solving cube is the recognition of the case in-front of you. Hence, efforts havebeen made to show you how to recognize these cases. There is no short-cut in memorizing the algorithms though;

you have to work on that yourself.

4 Cases where onlyEDGEShave to be permuted!

(R2 U) (R U) (R' U') (R' U') (R' U R') (R U) (R U) (R U) (R U) (R U R2)

(M2 U M2) U2 (M2 U M2) (R' U' R U') (R U R U') (R' U R U) R2 (U' R') U2

(OR) R2 U2 R U2 R2 U2 R2 U2 R U2 R2 (OR) y M2 U M2 U M U2 M2 U2 M U2

3 Cases where onlyCORNERS have to be permuted!

X (R U R) D2 (R U R) D2 (R2) X X (R2) D2 (R U R) D2 (R U R) X

X (R UR) D (R U R) D2 (L U L) D (L U L) X

Follow the lines for recognition !

Edited by Foxit ReaderCopyright(C) by Foxit Corporation,2005-2009For Evaluation Only.

Red Line Piecesin correct positio

Blue Line Piecefor observation

servat ons co ors1: b = c2. c = a

Color c

Color b

Color ahere,1. b=c2. c!=a

Accoto thconds hogoodapplalgo

Note: Top view is given follow the usual convention !

U(b) U(a)

(R U') (R U) (R U) (R U') (R' U' R2) (R2 U) (R U) (R' U') (R' U') (R' U R')

H Z

A(a)A(b)

E

7/27/2019 PLL With Recognition Aid.pdf

2/3

RCHG2010, IIT Kanpur

10 Cases where 2 Corners & 2 Edgeshave to be permuted!

(Similar Algorithms)

[R' U R' U'] y (R' F') (R2 U' R' U) (R' F R F) [R' U2 R' U'] y (R' F') (R2 U' R' U) (R' F R UF)

F (R U' R' U') (R U R' F') (R U R' U') (R' F R F') (R U L) U2 (R U R) U2 (R L U)

(Similar Algorithms)

(R U R' U') (R' F R2) (U' R' U') (R U R' F') (R U R' F') (R U R' U') (R' F R2) (U' R' U')

(Similar Algorithms)

(L U2 L U2) (L F)(L U L U) (L F L2) U' (R' U2 R U2) (R' F) (R U R' U') (R' F' R2) U'

(Similar Algorithms)

*(R U L) U2 (R U L)] * 2 *(L U R) U2 (L U R)+ 2

(Or) (Or)

(R' U R U') (R' F' U') (F R U) (R' F R' F') (R U' R) U2 (R U' R' U) (l U) (F U' R' F') (R U' R U) (l' U R') U2

Are DifferentColors !

V F

Y J(a)

J(b)T

R (a) R(b)

N(a)

7/27/2019 PLL With Recognition Aid.pdf

3/3

RCHG2010, IIT Kanpur

4 Cases where 3 Corners & 3 Edgeshave to be permuted!

(Algorithms in this section may look difficult but with simple observation of the movement of the pieces

you can remember them)

(R U R) y (R2 u) (R U R U) (R u R2)

(R2 u') (R U' R U) (R' u R2) (f R' f')

(R U R) y (R2 u) (R U R U) (R u R2)

(R2 u) (R U R U) (R u R2) y (R U R)

G(d)

G(c)

G(b)

G(a)