Lars Petrus Method

 

 

4. Finishing the first two layers

 

Do it in two parts: first we add a 1x2x2 block to the others, then we put in the last corner-edge pair.

According to the color-neutrality, there are four ways you can start.

After finishing the F2L the LL adges are always oriented well (you have the cross). If they aren’t, you made a mistake in irenting the edges.

 

I. The 1x2x2 block (4a)

 

One corner, one center and two edges, furthermore you can only turn the F and U sides. Not easy! (Actually, this is the „hardest” part of a solve.)

The technics is familiar: connect a corner and an edge, bring another edge to its color, and join them.

Let’s see an example!

 

 

UF brings the corner to its color.

 

 

Move the corner away to put in the GreenOrange egde. F’UF connects them.

 

 

U’ moves the corner-edge pair in the other side, so you can put in the GreenOrange edge. F’U2F does it.

The block is done, U’ moves it to its place.

 

 

While we are not sure what are we doing at the moment, it’s recommended not to break up the 2x2x3 block, because that changes the orientation of the edges.

 

II. The corner-egde pair (4b)

That’s hard... You can only turn to sides, and one of them also limited...

 

An easy way: first try to reach this position:

 

F.e.:

 

 

F separates them, U’FU and the job is done.

Now there are three possibilities:

 

               

F’U’F’U                                 U’F’UF2U’FU                       F2U’F2UF’U’FU

 

Harder:

If maybe the corner is in its place:

               

UFUFUF’U’F’U’      or:               UF’RL’U2R’LF’U’

 

Or both of them are in their places, but the corner not correctly:

 

         

L2F2L’F’LF’L’F2L’             U2F2UFU’FUF2U

 

The worst cases are where the corner and the edge are connected but not correctly.

Sometimes it’s shorter, if we break up the 1x2x2 block, f.e.:

U2F2UFU’FU2

 

 

 

Back to the Lars Petrus method

Back to the edge orientation

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