Help with algorithm on V Cube 7

Durandir

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Joined
Jul 7, 2010
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4
Hello.

This seems like the only place online I can get help. I am totally new to speedsolving. Haven't even started yet actually, but I think I must now after finding this forum. Not with my 7x7 I think, but my 3x3 at least.

But what I need help with is the 7x7 cube. I got it from my father a week ago. After realizing I would never manage to figure it out myself, I found algorithms I could use. The official V-cube site had great systems, and they also had visual aid, which helped me a lot. I had real difficulty understanding the algorithms, but the visual aid helped.

So after a lot of progress, a lot of messing it up again and a lot of breaks, I only have a bit left. But what I have left is something I just cannot figure out. Since the basics of the 7x7 cube is that you always move three pieces, I am stumped on this:
I'm really close!

Is there an algorithm which can help me switch two pieces? Or do I have to do some other magic to make this work? And remember, I need visual aid I'm afraid, or I'll not make it :/
 
You basically finish it exactly like a 3x3. I'm assuming you know 2 look OLL and PLL. This would just be fRUR'U'f' Of course the lower case f would be including the center as well.
 
@dabmasta: I'm going to seem so stupid on this forum now... No, your assumption is quite wrong.

My dad taught me the 3x3. It's not the best or fastest way to do it, and I don't think it is the same way you are talking about. Since he taught it to me, I haven't learned anything about PLL, OLL or anything like it. I tried to learn some of it when learning the algorithms for the 7x7, but I found it a lot easier just seeing the animation on the V-cube site, then memorizing it, toying with it in order to see what happened.

I will try to see if I can learn what you mean tomorrow, since I want to learn those things. But right now I don't have a clue what you mean. Doesn't help that I probably solve the 3x3 in a different way, since I cannot use what I use there to solve this problem. Will have to re-learn that one as well I think.

@(X): Edgepairing tutorials... will do. Tomorrow. If I try to do anything more on this now I'll probably mess up. Thanks for the tip :)
 
I don't know what the method on V-cube's site teaches, but most people use something called "reduction". Basically, you take your scrambled 7x7 and turn it into a 3x3. First, you put all the 5x5 centers together by making 5x1 lines. Then you match up the edge pieces. After that, you can solve it like a 3x3, turning only the outside-most layers, with whatever method you use.
 
Yes, I forgot to mention edge pairing. Learn that then solve it exactly how you would solve a 3x3.
 
Great. I am learning how to pair edges, it works great. Then everything is fine and dandy, expect I got two edges on the right place, only flipped 180 degrees. No matter what I do, I just cannot untangle it.

I feel like this cube wants to kill me :P When I had just understood how to fix the centers, a piece popped out, setting me back quite a long time (had trouble getting it in). When I learned how to do the corners, I did one wrong move, setting me back quite a long time. And I messed up the edge pairing as well, setting me back. But I will get this!

This is the site I used to learn these things. I am starting to learn a bit about typed algorithms, but I still need visual aid to get it right the first times.
There is a solution to the "two right, 180 degrees wrong" problem there, but I don't understand it. Doesn't help me that English is my second language I think.

You guys have been very helpful so far though, cannot thank you enough for that :D
 
It might not be as difficult as you think to solve it yourself without help. (I solved 3x3, 4x4 and larger cubes without help.) Solving the edges on any big cube is similar to solving the edges on a 4x4. You can get flipped (technically swapped) pieces onto a "super" edge (the pieces between 2 corners) for any big cube. On real big cubes, solving the center pieces are a challenge not found on the 4x4. But the centers can be figured out too on your own.

I looked at the picture you posted, http://img.photobucket.com/albums/v312/uidin/So-close.jpg

After getting down to 2 unsolved super edges, I personally prefer to confine the flipped pieces into just one super edge. Then I do the OLL parity fix along the slices of the associated flipped pieces.

Use what you already know how to do -- slice into a super edge, rotate the super edge to the side, move another super edge into its place, rotate the super edge back, undo the slice. That cycles 3 pieces. Do it right and you can get 11 out of your 12 super edges solved.

Then do the OLL parity algorithm used for solving a 4x4, applied to just the pieces that need flipping (swapping).
 
For what you had in the image, the algorithm you want is here. Scroll down to "double wing swaps" and do the one on the left. You will have to set up first using R B, and then rotate the cube so the edges that need to be solved are on the front face, as in the picture.
 
Ok, I am back again. I messed up the corners, then some other stuff, so I have taken a break before I fixed all that yesterday.
I know about edge pairing a bit now, but that doesn't help me since I haven't found any easy way to learn how to fix my new problem.

The new problem is more or less identical to the problem at the bottom of this site. I got two pieces left, they are at the right spot, only turned 180 degrees.
They have a "solution" there, but I'd rather learn an algorithm to fix it instead of doing what they do. I don't fully understand what they mean anyway...

If anyone got an algorithm I can use, please make it easy for me to understand. I understand some of the language they use on that site I linked to above here, so if you write it out like that, then I might be able to get.

It is really frustrating being so close, only having two pieces wrong, and not knowing how to do the rest.
 
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