Message #1793

From: Matthew Galla <mgalla@trinity.edu>
Subject: Re: [MC4D] Re: 24-cell FT solved!
Date: Mon, 20 Jun 2011 06:31:06 -0500

Haha, no not yet. Got busy with summer research jobs and the like, plus
kinda lost a little interest when I couldn’t be the first although thanks
for thinking of me. I’m sitting at around the 35-40% mark and I have all my
macros ready (for all pieces) and I have calculated and prepared for every
case so I suppose you could say I have theoretically solved it. Does that
count? :)

Perhaps later in the summer if I find time/motivation….

-Matt Galla

On Mon, Jun 20, 2011 at 2:42 AM, Eduard <baumann@mcnet.ch> wrote:

> **
>
>
> I’m not surprised that Nan is still alone to have solved the "24cell FT"
> with MPUlt. I have taken a look and find that the puzzle is a lot harder to
> solve than the 3x3x3x3.
> Has Matt Galla solved it? No item in Wiki.
>
>
> — In 4D_Cubing@yahoogroups.com, Nan Ma <mananself@…> wrote:
> >
> > Hi Matt,
> >
> > My move count was 54199. I know there’s a big room to improve. My way of
> > separating permutations from orientations does incur large move counts.
> So,
> > good luck on a shortest move solve!
> >
> > Nan
> >
> > On Sun, May 15, 2011 at 12:18 AM, Matthew Galla <mgalla@…> wrote:
> >
> > >
> > >
> > > Congrats Nan,
> > >
> > > I knew I wasn’t gonna be fast enough to be the first one done, but I do
> > > have about 50% done and all algorithms ready. Having just got out of a
> > > particularly difficult year of college (junior math/engineer double),
> I’ve
> > > been having trouble dedicating enough time to sitting here nd solving
> it ;)
> > >
> > > Perhaps I can beat you in moves? ;) How many was yours?
> > >
> > >
> > > As for the 120Cell, as I mentioned before, I believe it took me roughly
> 150
> > > hours, based on some random samples of how quickly I was solving pieces
> on
> > > average. I only used 2 permutation algorithms, very similar to
> eachother,
> > > and of only 8 and 12 moves and after doing them a couple of times, they
> > > easily become memorized. The actual process of clicking through the
> moves of
> > > these algorithms only took me about 16 seconds for the short one and
> about
> > > 30 seconds for the second. Although I never memorized setup moves, it
> was
> > > simple enough to abuse the undo feature to see exactly what setup moves
> I
> > > used and remember them for the 10 seconds it took to redo back to the
> end of
> > > the current solve. So my point here is that having the macros isn’t as
> big
> > > of a handicap as you may think. In fact, I’ve barely used any macros so
> far
> > > in my 24Cell solve. Especially in the beginning, they actually really
> hurt
> > > your flexibility in move count and setups.
> > >
> > > Congratulations again on the solve. You have too much free time and
> > > dedicaton!!! :D
> > > Hopefully I’ll be able to finish my solve and provide some great
> > > competition for lowest move count ;)
> > >
> > > -Matt Galla
> > >
> > > On Sun, May 15, 2011 at 1:07 AM, schuma <mananself@…> wrote:
> > >
> > >>
> > >>
> > >> Hi,
> > >>
> > >> Let me tell the story of solving the 24-cell. Everybody knows that
> 24-cell
> > >> is much sexier than 16-cell. So after solving the 16-cell, I looked at
> the
> > >> 24-cell. There are only five types of pieces to solve in the 24-cell,
> > >> compared with eight types for the 16-cell. The 3-cycle algorithms are
> > >> similar to the counterparts for the 16-cell. So it didn’t take long to
> find
> > >> them. Unlike the 16-cell, I prepared many different rotation
> algorithms to
> > >> fix the orientations of corners and edges, so that whenever I need any
> of
> > >> them, I can directly pull it off the shelf without thinking. I don’t
> want to
> > >> go into details because that would spoil the fun to those who wanna
> analyze
> > >> it by themselves.
> > >>
> > >> After I prepared all the algorithms, I still don’t know if I can face
> the
> > >> main difficulty of the 24-cell. The main difficulty is, of course,
> there are
> > >> too many colors. This time I use shift+left, shift+right a lot.
> Basically
> > >> I’m using them to find pieces. I never trust my color identification
> ability
> > >> because there are too many close colors. I only claim two pieces have
> the
> > >> same color when they are highlighted at the same time when I use
> > >> shift+right. In the beginning I wasn’t sure if I could really handle
> 24
> > >> colors. So I used the first step, the face centers, as a test for me.
> The
> > >> face centers don’t need complicated algorithms. Finding pieces of
> certain
> > >> color is everything. I started the solve on Friday afternoon, when I
> > >> finished the work I had to do for the week. I solved all the face
> centers
> > >> intuitively. It meant that I could handle the colors.
> > >>
> > >> After dinner I resumed the solve from about 9pm. By 2am, I solved all
> the
> > >> pieces except for the side-face pieces. I thought I should go on to
> finish
> > >> it, if the side-face pieces could be solved quickly. Then I used a
> stopwatch
> > >> to time myself on solving one such piece. In that trial I was nervous
> and it
> > >> took me 40 seconds to spot the colors, find the place it should go
> (using
> > >> shift+right), setup, call the macro and reverse setup. A simple
> calculation
> > >> told me that I needed three more hours for all the pieces. So I gave
> up and
> > >> went to bed. On Saturday I got up earlier than in weekdays and indeed
> spent
> > >> three more hours to finish it.
> > >>
> > >> This one is my longest solve to date. There are six hundred pieces or
> so
> > >> and I can use macros. I really don’t know how someone can solve the
> 120-cell
> > >> without macros.
> > >>
> > >> Nan
> > >>
> > >>
> > >> — In 4D_Cubing@yahoogroups.com, Melinda Green <melinda@> wrote:
> > >> >
> > >> > Congratulations, Nan!
> > >> > The 24 Cell is a very unique object. I’m sure we will all enjoy
> hearing
> > >> > your story.
> > >> > -Melinda
> > >> >
> > >> > On 5/14/2011 12:13 PM, schuma wrote:
> > >> > > Hi guys,
> > >> > >
> > >> > > I just solved the cell-turning 24-cell. The log file can be found
> > >> here:
> > >> > >
> > >> > > <http://games.groups.yahoo.com/group/4D_Cubing/files/Nan%20Ma/>
> > >> > >
> > >> > > This is probably my longest solve ever. It took me 9 hrs and 25
> min.
> > >> I’ll probably write about my experience later today.
> > >> > >
> > >> > > Nan
> > >> >
> > >>
> > >>
> > >
> > >
> >
>
>
>