TuRBo Corners

[Rubixcubematt]

I really doubt that you actually use freestyle corners now.

So your basically saying that if anyone makes a mistake, they don't do that????? If you made a mistake about speedcubing, could i say to you that i doubt you actually speedcube now?????

The analogy is more like if I don't understand the definition of Roux EO, you will doubt that I use Roux. I'm not doubting that you can solve the cube blindfolded as you claim. But I am questioning how "free" is your "freestyle."

It is quite free, i just couldn't see ABA'B' in that for some reason.

 

[Shamah02]

A=U F2 U' F2 U'
B=R2
A'=U F2 U F2 U'
B'=R2

[thread hijack]

That is my favorite commutator out of all of the corner ones. The A part is really beautiful once you understand what it's effect is and how it achieves it.

[/thread hijack]

like say you had a commutator where you had 2 stickers on the U layer facing up and the lone corner in the D layer facing down. When you "see" this you know that it is not the simple commutator and needs 12 moves to be solved...

Not all cases of that type need 12 moves.

case 1) UBL -> DLB -> URB: D L2 D R2 D' L2 D R2 D2
case 2) UBL -> DLB -> URF: R' U2 R U L2 U' R' U L2 U R

I do agree though that you learn to see, based on how the stickers are situated in relation to eachother, which case type you have. It's a lot like F2L in CFOP solving actually. You could memorize every possible case as an "algorithm" or learn a small group of types of commutators and learn how to recognize them on other faces or from different angles. That's all BH is really. As for R2 commutators, try looking at the BH corner commutators first to see if you find one you like. If those don't work, or you don't like them, then try freestlye using setups and A perms or setting up into one of a couple simple commutators that you can recognize easily.

Hope that helps at least a bit,
Chris

Oh, I forgot about those... Thanks for pointing that out

 

[Mike Hughey]

You see, I "kind of" understand commutators, but I can definitely only execute them with my eyes open, and blindfolded, well, I just can't do them. Any tips? (I have been looking at Ryan Heise's tutorial for Corner 3-Cycle Commutators but I still can't do them blindfolded)

Funny - for a number of months, I was the opposite - I could only execute commutators with my eyes closed. With my eyes open, I would get confused somewhere in the middle and mess them up every time.

I remember at the Virginia Open when I finished my first 4x4x4 BLD attempt (a fairly close DNF - I think just a few pieces wrong), I just stared at it and couldn't solve it. Daniel Beyer took it from me and finished it for me, and I explained to him that I have trouble doing commutators sighted.

Seriously, practice doing them with your eyes closed - they're actually easier to do that way, once you get used to them.

 

[byu]

The problem I have is that I can do the ones that are 8 moves, but not 12 moves. I can barely do 12 move ones sighted.

 

[cmhardw]

The problem I have is that I can do the ones that are 8 moves, but not 12 moves. I can barely do 12 move ones sighted.

When executing the more complicated corner commutators blindfolded I go through this mental process:

1) View the setup move(s), if any, and how it/they bring(s) the 3 pieces into your standard 8 move commutator. This works for all cases except the 10 move case where all 3 corners are on the same face and all are adjacent and non-interchangeable. Also this does not work with the Per Special (the 12 move case) since it is a 12 move pure commutator.

2) Once you are into the 8 move commutator picture the function of the A part. How are you inserting a lone piece into a layer to replace a corner? Follow this process as you do the moves.

3) Now interchange the pieces, and picture them swapping with eachother.

4) Now don't picture anything at all about the pieces, just undo the moves you did in the A part.

5) Again don't picture anything at all, just undo the B, or interchange, move.

6) Picture how the 3 pieces are part of a 8 move commutator again, and picture the piece you moved at first with the setup turn. Now undo the setup turn and picture moving that piece back to where it started.

Obviously you don't always have setup turns, and for some algs setup turns combine/cancel with the A or B part of the commutator. Also sometimes you do BAB'A' commutators (A represents the insertion move and B the interchange move).

Anyway, take this as a general process for how to picture commutators when solving blindfolded.

Hope this helps,
Chris