Message #1063

From: Jonathan Mecias <jonathan.mecias001@mymdc.net>
Subject: Re: [MC4D] Re: 2-c parity(?) problem with 4^4
Date: Thu, 22 Jul 2010 11:18:16 -0400

do you have a regular 4x4x4 rubiks cube at home? try playing around with
that to see what happends. Your doing great so far and dont stress it.

On Thu, Jul 22, 2010 at 7:52 AM, deustfrr <deustfrr@yahoo.ca> wrote:

>
>
> That reminds me of another problem I had. I’ll just say it
> The first time i tried solving the 3^4 I had a 2-cycle center parity, but
> the third time (youtube vid)I realized it was a 3-cycle. lolz
> I’m trying it right now. I switched 4 pieces…
>
>
> — In 4D_Cubing@yahoogroups.com <4D_Cubing%40yahoogroups.com>, Chris
> Locke <project.eutopia@…> wrote:
> >
> > Well, we can’t exactly solve it for you, but one of the big hints that
> > Brandon just gave is to try to "swap two indistinguishable pieces". When
> > you realize the presence of indistinguishable pieces, it suddenly no
> longer
> > becomes a parity issue, but just another case to work out with your
> > 3-cycles. Still some work left for you to figure out exactly how to use
> the
> > 3 cycles to get what you want done, but I think you’ll feel pretty good
> > about it when you do figure it out. Good luck!
> >
> > Chris
> >
> > 2010/7/22 deustfrr <deustfrr@…>
>
> >
> > >
> > >
> > > I updated the pictures. The red line is the wrong piece and the green
> line
> > > are the right pieces. And, can you make a log file showing the XY
> moves?
> > >
> > >
> > > — In 4D_Cubing@yahoogroups.com <4D_Cubing%40yahoogroups.com><4D_Cubing%
> 40yahoogroups.com>, Brandon
>
> > > Enright <bmenrigh@> wrote:
> > > >
> > > > —–BEGIN PGP SIGNED MESSAGE—–
> > > > Hash: SHA1
> > > >
> > > > On Wed, 21 Jul 2010 13:53:56 -0000
> > > > "deustfrr" <deustfrr@> wrote:
> > > >
> > > > > I have a problem with the last 2 faces
> > > > >
> > >
> http://groups.yahoo.com/group/4D_Cubing/photos/album/346940124/pic/list
> > > > > reply please
> > > > > (I got parental controls on time so I just type that, lolz)
> > > > >
> > > >
> > > > deustfrr,
> > > >
> > > > Your images are quite hard (for me) to see the exact problem in
> context.
> > > >
> > > > However, for your "1-c piece situation" image, you have what appears
> to
> > > > be a blue and an orange 1-c central piece swapped. If you were
> solving
> > > > purely intuitively then you may have a bit of trouble solving this
> but
> > > > if you have a 3-cycle for the 1-c pieces then just swap two
> > > > indistinguishable pieces such as two blue in the 3-cycle along with
> the
> > > > orange.
> > > >
> > > > For your "2-c piece parity 1b" and "2-c piece parity 1a" images, this
> > > > isn’t really a parity but they must be solved together.
> > > >
> > > > I recently discussed a semi-generic technique for doing this on
> almost
> > > > any puzzle here:
> > > >
> > >
> http://www.twistypuzzles.com/forum/viewtopic.php?f=8&t=7830&p=219422#p219422
> > > > The general idea is to 3-cycle your two flipped pieces along with
> some
> > > > other (choice is arbitrary) piece such that one of the flipped pieces
> > > > moves into the place of the other flipped piece (call this sequence
> X).
> > > > Then flip the whole group over and put it back in place (call this
> Y),
> > > > then undo X, then undo Y. This technique will work in any number of
> > > > dimensions.
> > > >
> > > > Good luck,
> > > >
> > > > Brandon
> > > >
> > > > —–BEGIN PGP SIGNATURE—–
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> > > >
> > > > iEYEARECAAYFAkxHNRsACgkQqaGPzAsl94JmswCfaN11Ja6eh2Dw6+nAFcunco40
> > > > X/MAn3VzbHkYtEJCNUGeCCM5MljsXnsG
> > > > =V8uU
> > > > —–END PGP SIGNATURE—–
> > > >
> > >
> > >
> > >
> >
>
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