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 Post subject: 3x3x5 normal cuboid tutorialPosted: Fri Aug 02, 2013 5:53 am

Joined: Thu Mar 22, 2012 8:54 am
Hi there, I was wondering for a 3x3x5 cuboid tutorial, I mean not hte L-cube or the X-cube, just the simple 3x3x5 cuboid, I have not found anything, but I know that there is a tutorial somewhere...could anyone help me? Thanks!

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 Post subject: Re: 3x3x5 normal cuboid tutorialPosted: Fri Aug 02, 2013 5:58 am

Joined: Mon Feb 28, 2011 4:54 am

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 Post subject: Re: 3x3x5 normal cuboid tutorialPosted: Fri Aug 02, 2013 8:13 am

Joined: Thu Mar 22, 2012 8:54 am
Thanks! it works...just a question, what about fixing a parity problem with the middle layer edges?...

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 Post subject: Re: 3x3x5 normal cuboid tutorialPosted: Fri Aug 02, 2013 4:28 pm

Joined: Mon Feb 28, 2011 4:54 am
elpuz wrote:
Thanks! it works...just a question, what about fixing a parity problem with the middle layer edges?...

Twist one of the middle layers one turn and then re-solve.

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 Post subject: Re: 3x3x5 normal cuboid tutorialPosted: Fri Aug 02, 2013 5:28 pm

Joined: Thu Mar 22, 2012 8:54 am
Thanks againfot your help!Ok, now I solved it,, thanks for your help, I solved in this way.....to fix parity I scrambled the cube and then I soved it as a 3x3x3, I just paired the edges and the the corners as in the 2 first points of the tutorial..... then scramble the cuboid and solve it without parity problems....

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 Post subject: Re: 3x3x5 normal cuboid tutorialPosted: Sat Aug 03, 2013 7:52 am

Joined: Thu Sep 17, 2009 6:07 am
Location: Germany, Bavaria
Hi elpuz,
I reduce the 5x5x3 to a 3x3x3. 3x3x3 edges first, corners second.
This is pretty straight forward. I have not looked at rline's tutorial, but I'm sure I do it differently.
In 50% of the solves, I'll see two corners need swapping. A single U turn transfers this to a situations where I need at the end something that looks like a swapping of two edges.
I'll use a cubic 3x3x5 to show it. The proportional one is logically the same puzzle!
I scrambled the puzzle and reduced everything less two 3x3x3 edges.

Actually, I do a 3-cycle where I involve a third 3x3x3 edge that has one of the two edge colours of the swapped pair. After the setup using 3x3x3 turns only, it looks like this:

We need a counter clockwise 3-cycle of the outer U layer.
Here is a cuboid sequence that does the job (Please note that U is just the outer thin layer and does not involve the layer below. R is the 3x3x3 face R):
[(R2 U)x2 (R2 U2)x2]x2 (x2 meaning repeat the sequence in brackets twice)
The result:

Personally, I think that a few cuboid sequences make your life easier.
I think there is a dependency between the number of sequences you memorize and how hard your strategy becomes.
Think of solving the Rubik's Cube
a) no sequences: pretty hard to invent something on the fly
b) two sequences = Ultimate solution
c) many sequences: speedcuber method

The Ultimate solution is a very good compromise, though.
rline shows how much he can accomplish with it.

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 Post subject: Re: 3x3x5 normal cuboid tutorialPosted: Sat Aug 03, 2013 8:14 am

Joined: Mon Feb 28, 2011 4:54 am
Quote:
I reduce the 5x5x3 to a 3x3x3. 3x3x3 edges first, corners second.
This is pretty straight forward. I have not looked at rline's tutorial, but I'm sure I do it differently.

I wouldn't be quite so sure Konrad

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 Post subject: Re: 3x3x5 normal cuboid tutorialPosted: Sat Aug 03, 2013 8:22 am

Joined: Sun Aug 26, 2012 10:01 am
I solve the 3x3x5 as a 3x3x3 also, but that is only to get it back to the cuboid shape.

I disregard where all pieces go apart from the edges of the middle layer.
I then use standard cuboid algorithms and solve it as 2 3x3x2's.

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 Post subject: Re: 3x3x5 normal cuboid tutorialPosted: Sat Aug 03, 2013 8:25 am

Joined: Sun May 19, 2013 7:32 pm
b) two sequences = Ultimate solution

I was just wondering , why is it called Ultimate Solution ?

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 Post subject: Re: 3x3x5 normal cuboid tutorialPosted: Sat Aug 03, 2013 11:33 am

Joined: Thu Sep 17, 2009 6:07 am
Location: Germany, Bavaria
Hi rline,
rline wrote:
Quote:
I reduce the 5x5x3 to a 3x3x3. 3x3x3 edges first, corners second.
This is pretty straight forward. I have not looked at rline's tutorial, but I'm sure I do it differently.

I wouldn't be quite so sure Konrad
rline in his blog wrote:
Then solve the reduced edges and corners exactly as for a 3x3x2 cuboid, ignoring the middle layer. As with a 3x3x2, it's possible to end up with two reduced edges needing to swap. The fix for this is to turn both the upper two layers one turn, then resolve the reduced edges
(not the tutorial) and the quoted sentence made me think that there might be some difference.
When I have reduced it to a 3x3x3, I solve it as a 3x3x3 without any further issues (like "parity").
I'm still pretty sure that at least the stuff I have posted (a pure 3-cycle of outer edges with a cuboid sequence) is not a part of your tutorial.
Please, don't assume that I want to criticize anything I just thought that the original poster might need some additional help
elpuz wrote:
Thanks again for your help!Ok, now I solved it,, thanks for your help, I solved in this way.....to fix parity I scrambled the cube and then I soved it as a 3x3x3, I just paired the edges and the the corners as in the 2 first points of the tutorial..... then scramble the cuboid and solve it without parity problems....
I assumed that there is some randomness in elpuz' approach: Why "then scramble the cuboid "?

Peace (quoting Allagem)

EDIT:
etshy wrote:
b) two sequences = Ultimate solution

I was just wondering , why is it called Ultimate Solution ?
Philip Marshall named his brilliant method "Ultimate Solution". It is using just two commutators called the "Edge Pieces Series" and the "corner Piece Series".
You'll find a lot more on rline's blog, including this link.

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 Post subject: Re: 3x3x5 normal cuboid tutorialPosted: Sat Aug 03, 2013 5:33 pm

Joined: Sun May 19, 2013 7:32 pm
Philip Marshall named his brilliant method "Ultimate Solution". It is using just two commutators called the "Edge Pieces Series" and the "corner Piece Series".
You'll find a lot more on rline's blog, including this link.

but I still don't get why it's ultimate ? did he just call it that ? or there is a definitive reason ? solving Rubik's Cube with only 2 commutators isn't an ultimate solution , I know Full commutators for corners and edges , and I still consider myself a noob
An Ultimate Solution in my opinion would be solving it in less than GOD's number , but ~65 moves ( as specified in Marshall's page ) isn't ultimate

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 Post subject: Re: 3x3x5 normal cuboid tutorialPosted: Sat Aug 03, 2013 5:41 pm

Joined: Tue Feb 08, 2011 3:17 am
Location: Australia
etshy wrote:
but I still don't get why it's ultimate ?
When you invent a method, you get to name it.

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 Post subject: Re: 3x3x5 normal cuboid tutorialPosted: Sun Aug 04, 2013 3:32 am

Joined: Thu Mar 22, 2012 8:54 am
Hi all friends!
When I say that I scramble the cube I mean that: Once I returned to cuboid shape I pair the inner edges (U F2 U' F") and the corners ([U R2 U' L2]x2)....they are very easy algs.....so the cubooid is like a 3x3x3...in solving it as a 3x3x3 then you have to scramble it, loosing the cuboid shape, but when you end it returns in original shape.....I tried to use other methods, but often you have to fix parity problems..... ...and I hate parity problems....
PS....Just a consideration...when I started with twistypuzzles I was always dreaming for a FF 3x3x5, of course without spend too much money....I waited many many years..many awesome puzzles has been factory made before it....but finally my dream is real!!

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 Post subject: Re: 3x3x5 normal cuboid tutorialPosted: Sun Aug 04, 2013 8:58 am

Joined: Thu Sep 17, 2009 6:07 am
Location: Germany, Bavaria
elpuz wrote:
...When I say that I scramble the cube I mean that: ...loosing the cuboid shape, ....
Aaah, I see. The word "scramble" means some randomness to me. My dictionary explained it as "make muddled"
Have fun!

You have probably seen the posts about the other variants?
All mean more fun!

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