Thread: "Thibaut Kirchner"

From: "thibaut.kirchner" <thibaut.kirchner@yahoo.fr>
Date: Tue, 16 Sep 2008 23:17:02 -0000
Subject: Thibaut Kirchner



Hello to all of you.
I'm Thibaut Kirchner, nearly 21 years old, and live near Paris, France.
I'm student in maths and computer science (fifth year after in
superior). Since a few days, I'm the 84th person having solved a 3^4
hypercube (actually, I've solved two of them).

I'm interested in solving puzzles which look like the traditional 3^3
cube since March, when a friend of mine taught me to solve the 3^3 and
the Pyraminx (at the French Open 2008).
Then I found how to solve the Megaminx, and then the 4^3 and 5^3 cubes
(parity errors were the more difficult).
I've been to some WCA competitions, but, if I like solving faster and
faster the same puzzles, what I really enjoy is to find methods and
algorithms to solve new puzzles. When I discovered Gelatinbrain
(http://users.skynet.be/gelatinbrain/Applets/Magic%20Polyhedra/) and
rediscovered the 3^4 hypercube (another friend of mine, Ilia Smilga,
solved it a few years ago, and I had heard of it), I decided to solve
as much puzzles from there as possible.

Now, I'm working at solving the 4^4 Hypercube and the Magic 120-Cell.
I believe I have a complete method to do them, the only thing I need
to complete the solution is some time, since it takes me a few minutes
to find some piece in this maelstrom of colors.
I expect to come with a full solution of the 4^4 in a few months, and
as for the Magic 120-Cell... It won't be sooner than in a few years,
since it is really an enormous puzzle.

I'm looking forward to speaking about methods to solve the 3^4
hypercube, but before, I have some questions:
- I read that we don't have a complete proof for the number of states
of the Magic 120-Cell (would you mind if I call it Hyper-megaminx?
Sounds better to me), because we don't have enough formulas to orient
all the pieces as we conjecture we can. Is it still true today? What
cases remain to be treated? To solve the 3^4 hypercube, I found (or
rather adapted from the 3^3 cube) and used a few formulas to orient
different pieces, and I'm almost sure (and absolutely sure for the
4-stickered and 3-stickered pieces) they can be adapted for the
Hyper-megaminx.
- Can someone do a program to manipulate a Hyper-pyraminx (based on
the 4D-simplex as the Pyraminx is based on the 3D-simplex), or
Super-hypercubes (as hypercubes but center pieces are somehow oriented)?

Thibaut.

PS: Thank you for your invitation here.




From: David Smith <djs314djs314@yahoo.com>
Date: Tue, 16 Sep 2008 20:32:40 -0700 (PDT)
Subject: Re: [MC4D] Thibaut Kirchner







Hello to all of you.
I'm Thibaut Kirchner, nearly 21 years old, and live near Paris, France.
I'm student in maths and computer science (fifth year after in
superior). Since a few days, I'm the 84th person having solved a 3^4
hypercube (actually, I've solved two of them).

I'm interested in solving puzzles which look like the traditional 3^3
cube since March, when a friend of mine taught me to solve the 3^3 and
the Pyraminx (at the French Open 2008).
Then I found how to solve the Megaminx, and then the 4^3 and 5^3 cubes
(parity errors were the more difficult).
I've been to some WCA competitions, but, if I like solving faster and
faster the same puzzles, what I really enjoy is to find methods and
algorithms to solve new puzzles. When I discovered Gelatinbrain
(http://users. skynet.be/ gelatinbrain/ Applets/Magic% 20Polyhedra/) and
rediscovered the 3^4 hypercube (another friend of mine, Ilia Smilga,
solved it a few years ago, and I had heard of it), I decided to solve
as much puzzles from there as possible.

Now, I'm working at solving the 4^4 Hypercube and the Magic 120-Cell.
I believe I have a complete method to do them, the only thing I need
to complete the solution is some time, since it takes me a few minutes
to find some piece in this maelstrom of colors.
I expect to come with a full solution of the 4^4 in a few months, and
as for the Magic 120-Cell... It won't be sooner than in a few years,
since it is really an enormous puzzle.

I'm looking forward to speaking about methods to solve the 3^4
hypercube, but before, I have some questions:
- I read that we don't have a complete proof for the number of states
of the Magic 120-Cell (would you mind if I call it Hyper-megaminx?
Sounds better to me), because we don't have enough formulas to orient
all the pieces as we conjecture we can. Is it still true today? What
cases remain to be treated? To solve the 3^4 hypercube, I found (or
rather adapted from the 3^3 cube) and used a few formulas to orient
different pieces, and I'm almost sure (and absolutely sure for the
4-stickered and 3-stickered pieces) they can be adapted for the
Hyper-megaminx.
- Can someone do a program to manipulate a Hyper-pyraminx (based on
the 4D-simplex as the Pyraminx is based on the 3D-simplex), or
Super-hypercubes (as hypercubes but center pieces are somehow oriented)?

Thibaut.

PS: Thank you for your invitation here.

=20














=20=20=20=20=20=20
--0-2145221680-1221622360=:97148
Content-Type: text/html; charset=us-ascii

Hi Thibaut,

 

Welcome to the 4D_Cubing group!  Congratulations on solving the 3^4 cube!

I also do speedcubing, but my times are probably not close to yours - I average

around a minute.

 

Regarding Magic120Cell and the number of positions, finding algorithms is not

my area of expertise.  I used to be more interested in verifying that the upper

bound is exact, but now I am content with just finding the upper bound, being

confident that it is almost certainly the exact number (because the mathematics

indicates that it is, and there has never been a permutation puzzle in which

the mathematically justified upper bound was not exact).  Roice Nelson, who

also posts on this group, told me that he has found the permutation algorithms

required, but I am not sure if anyone has discovered any orientation ones.

 

Also, thank you very much for your insights on the problem I may attempt to

work on.  I may not work on it for some time though, because I am working on

a number of other problems leading up to the upper bound for the number of

positions of an n^d Rubik's Cube, and its super and super-super variants, which

I am planning to write a short book about.

I am glad that you have decided to join this group, and although I am a relatively

new member, wanted to welcome you here.  Once again congrats for solving

the 3^4 cube (this is something I still have to try), and good luck with your

aspirations for solving the larger cubes and Magic120Cell.

 

All the Best,

David


--- On Tue, 9/16/08, thibaut.kirchner <thibaut.kirchner@yahoo.fr> wrote:

From: thibaut.kirchner <thibaut.kirchner@yahoo.fr>
Subject: [MC4D] Thibaut Kirchner
To: 4D_Cubing@yahoogroups.com
Date: Tuesday, September 16, 2008, 7:17 PM




Hello to all of you.
I'm Thibaut Kirchner, nearly 21 years old, and live near Paris, France.
I'm student in maths and computer science (fifth year after in
superior). Since a few days, I'm the 84th person having solved a 3^4
hypercube (actually, I've solved two of them).

I'm interested in solving puzzles which look like the traditional 3^3
cube since March, when a friend of mine taught me to solve the 3^3 and
the Pyraminx (at the French Open 2008).
Then I found how to solve the Megaminx, and then the 4^3 and 5^3 cubes
(parity errors were the more difficult).
I've been to some WCA competitions, but, if I like solving faster and
faster the same puzzles, what I really enjoy is to find methods and
algorithms to solve new puzzles. When I discovered Gelatinbrain
(http://users. skynet.be/ gelatinbrain/
Applets/Magic% 20Polyhedra/
) and
rediscovered the 3^4 hypercube (another friend of mine, Ilia Smilga,
solved it a few years ago, and I had heard of it), I decided to solve
as much puzzles from there as possible.

Now, I'm working at solving the 4^4 Hypercube and the Magic 120-Cell.
I believe I have a complete method to do them, the only thing I need
to complete the solution is some time, since it takes me a few minutes
to find some piece in this maelstrom of colors.
I expect to come with a full solution of the 4^4 in a few months, and
as for the Magic 120-Cell... It won't be sooner than in a few years,
since it is really an enormous puzzle.

I'm looking forward to speaking about methods to solve the 3^4
hypercube, but before, I have some questions:
- I read that we don't have a complete proof for the number of states
of the Magic 120-Cell (would you mind if I call it Hyper-megaminx?
Sounds better to
me), because we don't have enough formulas to orient
all the pieces as we conjecture we can. Is it still true today? What
cases remain to be treated? To solve the 3^4 hypercube, I found (or
rather adapted from the 3^3 cube) and used a few formulas to orient
different pieces, and I'm almost sure (and absolutely sure for the
4-stickered and 3-stickered pieces) they can be adapted for the
Hyper-megaminx.
- Can someone do a program to manipulate a Hyper-pyraminx (based on
the 4D-simplex as the Pyraminx is based on the 3D-simplex), or
Super-hypercubes (as hypercubes but center pieces are somehow oriented)?

Thibaut.

PS: Thank you for your invitation here.







--0-2145221680-1221622360=:97148--




From: "thibaut.kirchner" <thibaut.kirchner@yahoo.fr>
Date: Wed, 17 Sep 2008 08:08:05 -0000
Subject: Re: [MC4D] Thibaut Kirchner



--- In 4D_Cubing@yahoogroups.com, David Smith wrote:
> I also do speedcubing, but my times are probably not close to yours
>- I average around a minute.

Well, if you give a look in the WCA database, you'll see my times at
Brussels Summer Open: I averaged at 57 s, which is in fact quite close
to your times.

Thibaut.




From: "thibaut.kirchner" <thibaut.kirchner@yahoo.fr>
Date: Wed, 17 Sep 2008 10:10:15 -0000
Subject: Re: [MC4D] Thibaut Kirchner



Hello!

I haven't read the old messages, therefore I don't know if this has
already been suggested, and apologize in advance if this is the case,
but here is my suggestion:
What about adding to MC4D a tool to show / hide n-stickered pieces for
each value of n (as there is in Magic 120-Cell)?
I believe this could be useful to solve the 3^4, and much more to
solve the 4^4 and higher-sized hyercubes.





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