Interest in a BH method website?

[byu]

All right thanks. I think I'm going to compile all the posts together into one, single informative section about details for BH system.

I really want to get fast at BH, my first corner attempt was 12 minutes DNF because I kept messing up the commutators.

 

[Mike Hughey]

The algorithms are now in muscle memory though. It's an awesome feeling. ... And you will see the relations and one day you will do 11-move case quickly without pause in recognition or in execution. There are some really fast cases and you are like really? Did I just do that?

A great description - that's exactly how I feel now at some point or another on almost every solve! I especially can't believe it sometimes when I sail through a columns case. They still mostly trip me up, but occasionally I'll just see it and do it, and that's just amazing.

 

[byu]

For some reason I just can't see commutators blindfolded. If you set up an 8 or 9 move commutator, I can look at it, and almost instantly see what moves need to be made. But if all I know is URB->FLU->DFR, I have a really hard time doing it? Any suggestions?

 

[Mike Hughey]

For some reason I just can't see commutators blindfolded. If you set up an 8 or 9 move commutator, I can look at it, and almost instantly see what moves need to be made. But if all I know is URB->FLU->DFR, I have a really hard time doing it? Any suggestions?

See it in your head. It should be just like you're looking at the cube, but you don't actually have your eyes open. I find it's much easier to do a commutator blindfolded than it is with eyes open, because in my head, I only see the 3 pieces being cycled - I'm not distracted by all the other pieces.

 

[byu]

Can you please try to explain exactly what is happening in your head? It just doesn't work for me. Give me an example commutator, and tell me what you think. I used Ryan Heise's tutorial for finding a commutator, so I look at what color the stickers are...

 

[dbeyer]

Psst: Lucas helped a lot with the corner commutators. He created a program to load into CubeExplorer to generate the final file, because there were some errors (did each case by hand ... ugh ... 378 corner cases)

 

[dbeyer]

URB->FUL->DRF <-- Corrected for the proper notation of the pieces

URB and DRF are interchangeable by R2
FUL is the piece being inserted.

The Insertion: D'LD
Interchange: R2

so ABA'B'
D'LD R2 D'L'D R2
done

 

[dbeyer]

The concept of a commutator is it is an experiment. With a high level of control.

As a little kid you would find a vhs tape on the floor. You don't want to watch that movie, and for some odd reason you actually go to put it back in the box. You open the case and find that another video is in the box. You take it out Putting the correct vhs in the box. Then you take that movie and put it in its correct box, which of course has another wrong video inside. You take that swap the two and decide if this is the one you want to watch or not. You go from there.

Eventually you will sort out all the videos into the correct cases. Your problem is solved. Likewise with a cube, you take the lone piece, put it where it belongs, then now you have that cubie in its place. You then put that cubie where it belongs. Then take care of a few cubies at a time.

Likewise, you don't move or touch that movie until you find the right movie box. You rearrange the movies so they are in the correct boxes. Then you of course make sure to put them in order on the shelf like they should be.

Its random and silly. but it makes sense, I hope...

 

[byu]

The concept of a commutator is it is an experiment. With a high level of control.

As a little kid you would find a vhs tape on the floor. You don't want to watch that movie, and for some odd reason you actually go to put it back in the box. You open the case and find that another video is in the box. You take it out Putting the correct vhs in the box. Then you take that movie and put it in its correct box, which of course has another wrong video inside. You take that swap the two and decide if this is the one you want to watch or not. You go from there.

Eventually you will sort out all the videos into the correct cases. Your problem is solved. Likewise with a cube, you take the lone piece, put it where it belongs, then now you have that cubie in its place. You then put that cubie where it belongs. Then take care of a few cubies at a time.

Likewise, you don't move or touch that movie until you find the right movie box. You rearrange the movies so they are in the correct boxes. Then you of course make sure to put them in order on the shelf like they should be.

Its random and silly. but it makes sense, I hope...

An excellent analogy. I laughed at the part where you said "for some odd reason you actually go to put it back in the box".

 

[cmhardw]

As of May 8th 93/440 or about 21% of the edges cases are finished. Daniel has already written the algs, and I have already formatted them into the table. Right now I am going through adding case names and in some cases additional and alternate algorithms for 3x3x3.

Also, and I think this might disappoint people a bit but it's so important I have put it at the top of the page.

This is quoting from the page:

It is very important to note that Daniel and I have taken special care to optimize the supercube safe edge algorithms for use of BH on any odd sized cube. In doing so we occasionally use another metric called WTM or Wide Turn Metric. This includes turning double layers on 3x3x3 and multiple adjacent layers in the larger cubes. Lower case letters are used in this page for double layer turns. For example the turn r is done as R M' simultaneously.

For those learning this method it is important to know that no special care has been taken to optimize these algorithms for use on the 3x3x3. This may mean that the given algorithm(s) is/are not optimal in STM for 3x3x3 edges; this is a possible improvement to the BH method that we will explore at a later date. Anyone interested in optimizing the 3x3x3 cases is certainly welcome to do so, and please contact us if you would like us to update this page with your results (with due credit given).

I am trying my best to also include optimal or at least near optimal STM algs for the most obvious 3x3x3 cases as I work on the list. Note that these additional algs are not supercube safe and will not be useful on larger cubes blindfolded. I will not do this for the entire list right now.

Sorry for not posting the list sooner, but yesterday I actually ended up buying a used computer to replace my broken one. This means that I can spend more time and get the algs done hopefully quite soon. I am doing about 50-100 algs a day right now, but I hope to finish sooner.

Chris

 

[Mike Hughey]

It is very important to note that Daniel and I have taken special care to optimize the supercube safe edge algorithms for use of BH on any odd sized cube. In doing so we occasionally use another metric called WTM or Wide Turn Metric. This includes turning double layers on 3x3x3 and multiple adjacent layers in the larger cubes. Lower case letters are used in this page for double layer turns. For example the turn r is done as R M' simultaneously.

I'd like to point out that this hurts absolutely no one, since you should ideally either be:
a. for cases where you have no idea how to do it yet (mostly for the first cases you learn), studying the algorithm carefully to truly understand how it works, in which case you'll be playing with it enough to see any other useful way to look at it, or
b. for most cases, trying to figure out the algorithm yourself, and then comparing against Chris's list to see if you "got it right". It's much better to learn them by trying to figure them out yourself, once you have done others of the same type. It helps you see them during a solve if you learn to look for them yourself. So if you figure it out yourself, you'll already see any better ways of doing it by virtue of that.

For those learning this method it is important to know that no special care has been taken to optimize these algorithms for use on the 3x3x3. This may mean that the given algorithm(s) is/are not optimal in STM for 3x3x3 edges; this is a possible improvement to the BH method that we will explore at a later date. Anyone interested in optimizing the 3x3x3 cases is certainly welcome to do so, and please contact us if you would like us to update this page with your results (with due credit given).

I figure this will be the difference someday between the WR holders and the more ordinary, mostly sub-1 people. The barely sub-1 people will probably just use pure BH, and the WR holders will have a bunch of super-optimized algorithms chosen for finger speed, etc. But I suspect even the WR holders will mostly understand the pure BH algorithms, but will have chosen to use other algorithms after learning them, because they know they can do them faster. So getting WR speed means a somewhat more "freestyle" method.

 

[dbeyer]

The great thing about understanding BH is that you can understand the concepts to create optimal algorithms. Then you can also create algs on the fly. That are actually sub-optimal HTM, and you've created an optimal execution. The great thing about this method, is its a bunch of techniques that can be applied to correctly solve any cycle.

 

[byu]

I think I kind of understand BH now, I can do ALMOST all the commutators if I'm looking at them, and I think I can do Pure commutators (8-moves) blindfolded, but I'm not sure. Can someone test me (for example, list three cycles that can be done in 8 moves and see if I can do them, like just saying UBR UFR LUF)

Another question: Is there a specific order for the last two letters of a corner piece? Like, what is the rule for determining whether to write LUF or LFU, since they are the same sticker/piece.

 

[cmhardw]

Can someone test me (for example, list three cycles that can be done in 8 moves and see if I can do them, like just saying UBR UFR LUF)

(URB BRD LBD)
(URB LBD RFD)
(URB FRU LFU)

If you can do those blindfolded, you have the 8 movers down.

Another question: Is there a specific order for the last two letters of a corner piece? Like, what is the rule for determining whether to write LUF or LFU, since they are the same sticker/piece.

I go counterclockwise around the corner. Daniel said that he goes counterclockwise around the corner, and to be honest before he and I started talking to standardize BH I had never thought about it (I considered the letters to be interchangeable with no effect). I think most people go clockwise around the corner, or don't have a system for it.

Chris

 

[deadalnix]

Any information for name convention for 8 move algs ?

It's not a problem for me to figure out what to do when it's a 8 moves case, but I realy don't know if it's a direct insert or a drop and catch or whatever.

PS: some algs are using [AB2A',C2] structure, which can always be done like [ABA',C2] or [AB2A',C]

For exemple :
(URB UFR DLB) D F2 D' B2 D F2 D' B2 (8 HTM)

Can be done :
B2R'F'RB2R'FR which is more optimal (if more optimal make sens).

 

[byu]

Can someone test me (for example, list three cycles that can be done in 8 moves and see if I can do them, like just saying UBR UFR LUF)

(URB BRD LBD)
(URB LBD RFD)
(URB FRU LFU)

If you can do those blindfolded, you have the 8 movers down.

First one - Success
Second one - Failure
Third one - Success

First and third one took about 1-2 minutes to figure out, so I'm really SLOW. Second, one, I'm stuck on it blindfolded, I could figure out that LBD and RFD are interchangeable by D2, but I couldn't figure out anything else. Am I doing bad? I've only been trying this for 3 days... well actually more like 2 1/2.

Another question: Is there a specific order for the last two letters of a corner piece? Like, what is the rule for determining whether to write LUF or LFU, since they are the same sticker/piece.

I go counterclockwise around the corner. Daniel said that he goes counterclockwise around the corner, and to be honest before he and I started talking to standardize BH I had never thought about it (I considered the letters to be interchangeable with no effect). I think most people go clockwise around the corner, or don't have a system for it.

Chris

OK, I'll try to conventionally go counter-clockwise from now on.

 

[deadalnix]

Second, one, I'm stuck on it blindfolded, I could figure out that LBD and RFD are interchangeable by D2, but I couldn't figure out anything else. Am I doing bad?

You have seen something important. So you know now your interchange move : D2. You have to think about your inserting move.

Your insertion move will be something like AA' Because of 2 as insertion move.

You have 4 possibilities :
1/ R, but R move URB corner too, it's not the good one.
2/ L, but the sticker of the corner don't go on U face, si it's not good.
3/ F', it looks good.
4/ B', as R, it move URB corner too.

So you have tour second move : F'UF .

 

[cmhardw]

Can someone test me (for example, list three cycles that can be done in 8 moves and see if I can do them, like just saying UBR UFR LUF)

(URB BRD LBD)
(URB LBD RFD)
(URB FRU LFU)

If you can do those blindfolded, you have the 8 movers down.

First one - Success
Second one - Failure
Third one - Success

First and third one took about 1-2 minutes to figure out, so I'm really SLOW. Second, one, I'm stuck on it blindfolded, I could figure out that LBD and RFD are interchangeable by D2, but I couldn't figure out anything else. Am I doing bad? I've only been trying this for 3 days... well actually more like 2 1/2.

Actually, you're doing pretty well. I intentionally gave you some of the more difficult 8 movers to see. If it helps, and I posted it in the BH resource center just now, I consider "viewpoint shifting" an absolute staple in my solving. I use it at least once every solve or every other solve.

http://tinyurl.com/ozg5p8

Hope this helps,
Chris

 

[byu]

Can someone test me (for example, list three cycles that can be done in 8 moves and see if I can do them, like just saying UBR UFR LUF)

(URB BRD LBD)
(URB LBD RFD)
(URB FRU LFU)

If you can do those blindfolded, you have the 8 movers down.

First one - Success
Second one - Failure
Third one - Success

First and third one took about 1-2 minutes to figure out, so I'm really SLOW. Second, one, I'm stuck on it blindfolded, I could figure out that LBD and RFD are interchangeable by D2, but I couldn't figure out anything else. Am I doing bad? I've only been trying this for 3 days... well actually more like 2 1/2.

Actually, you're doing pretty well. I intentionally gave you some of the more difficult 8 movers to see. If it helps, and I posted it in the BH resource center just now, I consider "viewpoint shifting" an absolute staple in my solving. I use it at least once every solve or every other solve.

http://tinyurl.com/ozg5p8

Hope this helps,
Chris

I'm doing good? I never thought of it like that. All I know is that it takes me 1-3 minutes to see an 8-mover, and I can't even see all of them. My goal is to be able to see 8-movers in 30 seconds or less, and A9s in 1-3 minutes, like my 8-movers are now.

 

[cmhardw]

I'm doing good? I never thought of it like that. All I know is that it takes me 1-3 minutes to see an 8-mover, and I can't even see all of them. My goal is to be able to see 8-movers in 30 seconds or less, and A9s in 1-3 minutes, like my 8-movers are now.

You will get used to the patterns. Again, imagine that you are learning F2L all over again. At first it seems like you can't spot how to pair a corner and an edge, and over time it becomes second nature.

Trust me, check out viewpoint shifting in my post above. I guarantee that it will take 30 seconds to a minute off your hardest cases in no time. Over time it makes spotting even the most difficult to see cases effortless.

Chris