# Message #1908

From: Eduard <baumann@mcnet.ch>

Subject: Re: 24cell FT

Date: Tue, 08 Nov 2011 22:31:20 -0000

I have found the solution to my problem! To get an edge mirrored in "24cell FT" the walk must go AROUND the whole 24cell. That’s very fascinating!

— In 4D_Cubing@yahoogroups.com, "Eduard" <baumann@…> wrote:

>

> 24cell FT

>

> After having sucessfully finished the 96 2-colored face centers I’m tackling the 96 3-colored edges. With my 3-cycle for edges (keeping the face centers) I brought home two edges and they where not mirrored by chance. Then the three following edges arrived mirrored at home!

> By chance I discovered how to turn edges on place (my pair flipping macro for face centers executed three times yields a turn of three edges on place). But we must distinguish between turning (c1,c2,c3) and mirroring (c1)(c2,c3) in cycle notation. c1,c2and c3 are the three colors of an edge. Is that right (Nan, Andrey)? It is very difficult to imaging a walk so that an edge returns mirrored at home. I need such a walk to construct a mirroring macro for edges. Who wants help me?

>

>

> — In 4D_Cubing@yahoogroups.com, "Andrey" <andreyastrelin@> wrote:

> >

> > I’ve also finished 2C centers. It took about 570 twists (and no macros at all). Now work with 3Cs - finished 5 cells of 24. Comparing with 120-cell it looks not difficult at all - but the most interesting things are still ahead :)

> >

> > Andrey

> >

> > — In 4D_Cubing@yahoogroups.com, "Eduard" <baumann@> wrote:

> > >

> > > I have finished now the 96 2C face centers of the 24cell FT. I needed 8121 moves compared to the about 800 moves of Nan for the same thing. This is a little bit frustrating but not enough to stop my efforts. Now I tackle the 96 3C edges. I have already a 3 cycle. The same 3 cycle executed 3 times gives a 3 cycle for the 2C face-sides.

> > >

> > > — In 4D_Cubing@yahoogroups.com, "Eduard" <baumann@> wrote:

> > > >

> > > > I have started to solve 24cell FT". Until now only Nan Ma did it in about 54’000 moves.

> > > > Forst I place at home the 2 colored face elements. There are 96. For 52 faces I needed 5300 moves. Replaying the log file of Nan I see that he used only about 750 moves for all faces. Most of his moves are dedicated to place the 2 colored face-corner elements different from the face elements (13’000 to 54’000).

> > > > My technic consists of using a narrow 3 cycle for the faces and a narrow 2 element flip for faces. I estimate that I will use about 10’000 moves for the faces only.

> > > > I observe also when replying Nan’s log file that only the very first moves show an animation.

> > > > Can anybody help me to understand these things? ;-)

> > > >

> > >

> >

>