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=== F2L 29 ===
 
=== F2L 29 ===
 
[[Image:F2L29.png]]
 
[[Image:F2L29.png]]

Revision as of 11:02, 4 May 2010

The First Two Layers

First Two Layers, or F2L are normally the first two bottom layers of the 3x3x3 cube, or essentially all layers up until the last layer on larger cubes.

The definition is a little different depending on the subject or who you are talking to. Normally it is as above but it may also refer to the part of the Fridrich method that solves the pairs without counting the cross part.


Approaches

Petrus F2L

Another way to solve the 'F2L' is by building blocks, common during the first two layers of the Petrus method.

Fridrich F2L

There are many ways to solve the 'F2L' on a cube. A common system is using the Fridrich method first two layer approach. After solving the cross, a corner-edge pair is paired up, and then inserted into the correct slot. A total of four corner edge (or 'CE') pairs are made and inserted to solve the first two layers.

The concept of pairing up four corner/edge pairs was first proposed by Ren Schoof in 1981.

Most people agree that the Fridrich F2L should be done intuitively, but when you are starting out it can be instructive to see some optimal solutions for each F2L pair. Below is a collection of such optimal solutions

Easy Cases

F2L 1

F2L01.png

Speedsolving Logo tiny.gif F2L U (R U' R')
Speedsolving Logo tiny.gif F2L R' F R F'


F2L 2

F2L02.png

Speedsolving Logo tiny.gif F2L y' U' (R' U R)
Speedsolving Logo tiny.gif F2L F R' F' R
Speedsolving Logo tiny.gif F2L d' L' U L



F2L 3

F2L03.png

Speedsolving Logo tiny.gif F2L y' (R' U' R)


F2L 4

F2L04.png

Speedsolving Logo tiny.gif F2L (R U R')


Reposition Edge

F2L 5

F2L05.png

Speedsolving Logo tiny.gif F2L (U' R U R') U2 (R U' R')
Speedsolving Logo tiny.gif F2L (U' R U R') U (R' F R F')


F2L 6

F2L06.png

Speedsolving Logo tiny.gif F2L d (R' U' R) U2' (R' U R)
Speedsolving Logo tiny.gif F2L y' (U R' U' R) U2 (R' U R)
Speedsolving Logo tiny.gif F2L y' (U R' U' R) U' y (F R' F' R)


F2L 7

F2L07.png

Speedsolving Logo tiny.gif F2L U' (R U2' R') U2 (R U' R')


F2L 8

F2L08.png

Speedsolving Logo tiny.gif F2L d (R' U2 R) U2' (R' U R)
Speedsolving Logo tiny.gif F2L y' U (R' U2 R) U2 (R' U R)


Reposition Edge and Flip Corner

F2L 9

F2L09.png

Speedsolving Logo tiny.gif F2L d (R' U' R U')(R' U' R)
Speedsolving Logo tiny.gif F2L y2 U' (L U') d' (L' U' L)

F2L 10

F2L10.png

Speedsolving Logo tiny.gif F2L U' (R U R' U)(R U R')


F2L 11

F2L11.png

Speedsolving Logo tiny.gif F2L U' (R U2' R') d (R' U' R)


F2L 12

F2L12.png

Speedsolving Logo tiny.gif F2L d (R' U2 R) d' (R U R')


F2L 13

F2L13.png

Speedsolving Logo tiny.gif F2L d (R' U R U')(R' U' R)
Speedsolving Logo tiny.gif F2L y' U (R' U R U')(R' U' R)

F2L 14

F2L14.png

Speedsolving Logo tiny.gif F2L U' (R U' R' U)(R U R')


Split Pair by Going Over

F2L 15

F2L15.png

Speedsolving Logo tiny.gif F2L y' (R' U R U') d' (R U R')
Speedsolving Logo tiny.gif F2L y (L' U L) U2 y (R U R')

F2L 16

F2L16.png

Speedsolving Logo tiny.gif F2L (R U' R' U) d (R' U' R)
Speedsolving Logo tiny.gif F2L (R U' R') U2 (F' U' F)

F2L 17

F2L17.png

Speedsolving Logo tiny.gif F2L (R U2 R') U' (R U R')


F2L 18

F2L18.png

Speedsolving Logo tiny.gif F2L y' (R' U2 R) U (R' U' R)


Pair Made on Side

F2L 19

F2L19.png

Speedsolving Logo tiny.gif F2L U (R U2 R') U (R U' R')

F2L 20

F2L20.png

Speedsolving Logo tiny.gif F2L y' U' (R' U2 R) U' (R' U R)

F2L 21

F2L21.png

Speedsolving Logo tiny.gif F2L U2 (R U R' U)(R U' R')


F2L 22

F2L22.png

Speedsolving Logo tiny.gif F2L y' U2 (R' U' R U')(R' U R)


Weird

F2L 23

F2L23.png

Speedsolving Logo tiny.gif F2L (R U R' U') U' (R U R' U')(R U R')
Speedsolving Logo tiny.gif F2L U2 R2 U2 (R' U' R U') R2

F2L 24

F2L24.png

Speedsolving Logo tiny.gif F2L y' (R' U' R U) U (R' U' R U)(R' U' R)
Speedsolving Logo tiny.gif F2L y' U2 R2 U2 (R U R' U) R2

Corner in Place, Edge in U Face

F2L 25

F2L25.png

Speedsolving Logo tiny.gif F2L d' (L' U L) d (R U' R')
Speedsolving Logo tiny.gif F2L y U' (L' U' L) U (F U F')
Speedsolving Logo tiny.gif F2L U' (F' U F) U (R U' R')
Speedsolving Logo tiny.gif F2L R U2 R' U R U2 R' U2 R U' R'
Speedsolving Logo tiny.gif F2L R U R' U2 R U R' U2 R U' R'
Speedsolving Logo tiny.gif F2L R' F' R U R U' R' F
Speedsolving Logo tiny.gif F2L (U') F' R U R' U' R' F R

Back Right slot open - (U D' R U' R' D)

F2L 26

F2L26.png

Speedsolving Logo tiny.gif F2L U (R U' R') d' (L' U L)
Speedsolving Logo tiny.gif F2L U (R U' R') U' (F' U F)


F2L 27

F2L27.png

Speedsolving Logo tiny.gif F2L (R U' R' U)(R U' R')


F2L 28

F2L28.png

Speedsolving Logo tiny.gif F2L y' (R' U R U')(R' U R)

Template:(R U R') U (F' U2 F)

Speedsolving Logo tiny.gif F2L (R U' R') U2 (F' U F)


F2L 29

F2L29.png

Speedsolving Logo tiny.gif F2L y' (R' U' R U)(R' U' R)

F2L 30

F2L30.png

Speedsolving Logo tiny.gif F2L (R U R' U')(R U R')


Edge in Place, Corner in U face

F2L 31

F2L31.png

Speedsolving Logo tiny.gif F2L (R U' R') d (R' U R)
Speedsolving Logo tiny.gif F2L (R U' R' U)(F' U F)

F2L 32

F2L32.png

Speedsolving Logo tiny.gif F2L (R U R' U')(R U R' U')(R U R')
Speedsolving Logo tiny.gif F2L (U R U' R')(U R U' R')(U R U' R')

F2L 33

F2L33.png

Speedsolving Logo tiny.gif F2L (U' R U' R') U2 (R U' R')
Speedsolving Logo tiny.gif F2L y U' (L U' L') U2 (L U' L)

F2L 34

F2L34.png

Speedsolving Logo tiny.gif F2L U' (R U2' R') U (R U R')
Speedsolving Logo tiny.gif F2L U (R U R') U2 (R U R')
Speedsolving Logo tiny.gif F2L d (R' U R) U2 (R' U R)

F2L 35

F2L35.png

Speedsolving Logo tiny.gif F2L (U' R U R') d (R' U' R)
Speedsolving Logo tiny.gif F2L U2 (R U' R') U' (F' U' F)

F2L 36

F2L36.png

Speedsolving Logo tiny.gif F2L d (R' U' R) d' (R U R')
Speedsolving Logo tiny.gif F2L y U2 (L' U L) U (F U F')

Edge and Corner in Place

F2L 37

F2L37.png

Solved

F2L 38

F2L38.png

Speedsolving Logo tiny.gif F2L (R U' R') d (R' U2 R) U2' (R' U R)
Speedsolving Logo tiny.gif F2L (R U R') U2 (R U2 R') d (R' U' R)

F2L 39

F2L39.png

Speedsolving Logo tiny.gif F2L (R U' R') U' (R U R') U2 (R U' R')
Speedsolving Logo tiny.gif F2L y (L' U' L) U2 (L' U L U')(L' U' L)

F2L 40

F2L40.png

Speedsolving Logo tiny.gif F2L (R U' R' U)(R U2' R') U (R U' R')
Speedsolving Logo tiny.gif F2L (R U R') U2 (R U' R' U)(R U R')

F2L 41

F2L41.png

Speedsolving Logo tiny.gif F2L (R U' R') d (R' U' R U')(R' U' R)
Speedsolving Logo tiny.gif F2L y (L' U' L U)(L' U L) U2 (F U F')

F2L 42

F2L42.png

Speedsolving Logo tiny.gif F2L (R U' R') d2 y (R' U' R U')(R' U R)
Speedsolving Logo tiny.gif F2L (R U R' U')(R U' R') U2 (F' U' F)

See Also

External Resources