OLLE with last F2L pair insertion

[Lloyd1337]

I know that in some cases you can orient the last layer edges when inserting the last F2L pair by inserting it differently (like, R' F R F' instead of R U' R'). Is this case (and the one where the F2L pair is facing in the other direction, but same idea) the only one where this is possible, or are there more ways to insert the last F2L pair so that you can orient all 4 LL edges in a case where you would normally only be able to orient 2?

I don't know if I'm being very clear, but I basially want to know if there is a way to do this so that I don't have to learn all of the OLL algs. I though I recalled seeing a page showing a few different cases, but I don't thing it was as in-depth as ZB (the F2L corner and edge were already paired up, it was only variations on how to insert them).

 

[Karthik]

Check this out: http://cubefreak.net/speedcubing_misc.html#edge_control

 

[Dyste]

Well, there's really only 3 necesarry cases to worry about. There's the case where there's no ell, when there's an ell, and when there's a straight center row. When there's no ell, I do R U y' L U' L' U y R' U' (R' F R F'). When there's an ell, I just do R U y' L U' L U B', like you would normally, I suppose. When there's a line, I break an edge off of it with R U R', taking a CE pair out, and then set up with U' and do R' F R F'.

Oh, sorry, yea, this deals with having all pairs in. It's more difficult to work it out when there's one still out. R' F R F' only works with the ell being diagonal to the CE pair, so that's why I figured out those cases.

 

[AvGalen]

If you want to take this to a higher level, search for VH or ZBF2L

 

[jeff081692]

Learning the 32 cases for the 3 move insert ZBF2L algs are all you would really need. That plus the 7 edge algorithms are 39 in total. And the R U R' cases can easily turned into the edge and corner connected in the top layer making it only 16 cases to learn but that is slower than knowing all 32 but good if you decide to learn those because you can set up a case you know untill you learn the rest.

 

[mizzle]

All you need to learn are the 8 cases each for the two front slots. Learn the connected pair and the unconnected pair.

You can find the algs on anyone's ZB page. Chris Hardwick's or Lars Vandenbergh's should do nicely.

This works amazingly with COLL.