LL Methods?

[CarlKaase]

Can anyone help direct in in a way to get the last layer that's faster than beginner, but still has few algorithims?(That is if such a thing exists) Thank you

 

[JohnnyA]

Use 2-look OLL and PLL? Needs 20 algs if I remember right.

 

[Tetris Cube]

Two look OLL is 10 algorithms, but more like 8. 7 corner only OLLs and the 3 edge flipping OLLs are basically all the same algorithm. You need 6 PLLs, two U perms, H, Z, one that switches adjacent corners, and one that switches two opposite corners. They don't have to be A and E perm, even though they only affect corners. If you can do another one faster, then go for that one.

There's also Petrus's beginner LL, which if you add edge orientation to, would make a 4-5 look LL, depending on how many Sunes you have to use, maximum of two. The only difference is that it handles all corner OLLs with only Sune which makes the algorithm count go down. For all of the two Sune cases, I used to already know which side to do the first and second for all cases beforehand, so it was basically one look, but two executions. Just with non-blind U turns in between.

 

[Sa967St]

Use 2-look OLL and PLL? Needs 20 algs if I remember right.

I think its 16

OLL: 3 for edges, 7 for corners
PLL: 2 for corners (like T and Y perm), 4 for edges

 

[Odin]

Use 2-look OLL and PLL? Needs 20 algs if I remember right.

I think its 16

OLL: 3 for edges, 7 for corners
PLL: 2 for corners (like T and Y perm), 4 for edges

Ya, Its 16. http://badmephisto.dyndns.org/site/2LookOLL.pdf
http://badmephisto.dyndns.org/site/2LookPLL.pdf

 

[brunson]

If you learn badmephisto's OLL's from that PDF, here's a tip: The edge orientation algorithm he uses for no edges orientd will orient all edges no matter what. But, say you have no edges and no corners oriented, if you AUF correctly before executing the alg, you'll solve OLL in one step. Look at the image here: http://www.speedsolving.com/wiki/index.php/OLL. If you can recognize the arrangement of the top color stickers that aren't acutally on the top of the cube and orient them correctly, you win.

This is a fact because he's given you the alg for OLL case #2 (Fridrich/Macky numbering). That OLL has a 1 in 54 chance of occurring during a solve, and if you can recognize it then orient the U layer correctly, you will solve edge and corner orientation with one alg.

It's also a useful to know that if you have a line orientation and you're going to perform F R U R' U' F' to solve it, if the edges and corners for a 'T', then you should AUF to put the to of the T so it runs along the right edge of the U layer, like it's tipped over to the right. If you do that, then you have a 50/50 chance of solving OLL in one alg. If you can recognize the difference between OLL cases 33 and 45, then you have a 1/4 chance of saving yourself an unnecessary U2, but the 50% possibility of avoiding an entire corner orientation alg is worth doing the U2 even if it may not be needed.

2LLL solvers recognize all OLL cases by looking not only at the pattern on the top of the cube, but also the stickers around the edge, just like recognizing PLL. Learning what I've pointed out above can be a first step towards full OLL.

 

[Tetris Cube]

2LLL solvers recognize all OLL cases by looking not only at the pattern on the top of the cube, but also the stickers around the edge, just like recognizing PLL.

Actually, for PLL you only look at the stickers around the sides... you don't need to look at the top ones because they're all the same.