Online since 2002. Over 3300 puzzles, 2600 worldwide members, and 270,000 messages.

TwistyPuzzles.com Forum

It is currently Wed Apr 16, 2014 12:20 am

All times are UTC - 5 hours



Post new topic Reply to topic  [ 25 posts ] 
Author Message
 Post subject: My new Megaminx mod
PostPosted: Mon Aug 29, 2005 5:09 pm 
Offline
User avatar

Joined: Mon Jul 30, 2001 2:50 am
Location: Nottingham, UK
Hi all,
I have just finished my new Megaminx mod.
It was inspired by J├╝rgen Brandt's creations.
Please have a look.
There are 10 colours. It was cutting out 150 stickers nearly killed me!

Vadim


Attachments:
New Megaminx.jpg
New Megaminx.jpg [ 84.44 KiB | Viewed 8395 times ]
New Megaminx4.jpg
New Megaminx4.jpg [ 87.93 KiB | Viewed 8403 times ]
New Megaminx2.jpg
New Megaminx2.jpg [ 87.71 KiB | Viewed 8392 times ]
Top
 Profile  
 
 Post subject:
PostPosted: Mon Aug 29, 2005 5:29 pm 
Offline
User avatar

Joined: Thu Jul 08, 2004 6:33 am
Location: United Kingdom
Wow! It looks great!!

I really love the way it really brings out the "star" shape of the megaminx on the top.

_________________
Best Average - 29.97secs / Best Non-lucky Time 21.34secs

www.nickylewis.co.uk


Top
 Profile  
 
 Post subject:
PostPosted: Mon Aug 29, 2005 6:42 pm 
Offline
User avatar

Joined: Mon Sep 09, 2002 2:19 pm
Location: Yaroslavl, Russia and Maryland, USA
Vadim, I really love the shape of your new puzzle! So nice! :P

_________________
Aleksey


Top
 Profile  
 
 Post subject:
PostPosted: Tue Aug 30, 2005 8:50 pm 
Offline
User avatar

Joined: Mon Oct 18, 2004 11:06 pm
Location: Portland, ME
Cool! Can you post a photo or two of a fully scrambled one?


Top
 Profile  
 
 Post subject:
PostPosted: Wed Aug 31, 2005 2:45 am 
Offline

Joined: Wed Jul 17, 2002 3:08 pm
Wow! wonderfully unique mod! It brings to mind a question I've always had tho: is there a sequence
that just turns 1 or 2 center pieces on a megaminx? I realize you wouldn't need to if you just set them as you went, but how could you do it after is was solved?
I don't see any way to turn just 1 like on a cube since it would require a 5-cycle of edge and corner pieces. You couldn't do 2 centers using a commuter because no two center pieces lie on a seperate movable "layer" like on a cube, but maybe doing two 5-cycles around 2 centers and then re-orienting both whole sides? Or could you even do two 5-cycles around one center piece? hmm,
off to mar up my megaminx


Top
 Profile  
 
 Post subject:
PostPosted: Wed Aug 31, 2005 4:26 am 
Offline
User avatar

Joined: Fri May 06, 2005 10:13 am
Location: Norway
Hey!

It is possible to rotate the centers any way u like on the original megaminx. To rotate a center one step involves an edge-5 cycle and also a corner 5-cycle. Both of those are possible using basic commutators. A 5-cycle is constructed with 2 3-cycle 8-)

-Per :solved:

_________________
"Life is what happens to you while you are busy making other plans" -John Lennon, Beautiful Boy


Top
 Profile  
 
 Post subject:
PostPosted: Wed Aug 31, 2005 1:02 pm 
Offline

Joined: Tue Oct 07, 2003 10:00 pm
To rotate a Megaminx center I prefer doing a 5-cycle of corner-edge pairs: (R'dR - U*i - R'd'R - U*i)*3 with d meaning everything below U and i being the rotation of your choice.


Top
 Profile  
 
 Post subject:
PostPosted: Thu Sep 01, 2005 6:29 pm 
Offline

Joined: Wed Jul 17, 2002 3:08 pm
ya, I figured that out, wasn't too hard. I guess I was under the impression that a 5-cycle of just corner-edge pairs wasn't possible because a 4-cycle isn't possible on the cube (except when adding the twisting of the center piece). Is it because it's an odd numbered cycle? I'm confused about exactly what's possible and what's not on twisty puzzles, how and why those rules change from puzzle to puzzle, how the "math" of these rules work with the combinations of swaps and orientations. It's impossible to swap 2 edge or corner pieces on a cube, but is it possible to do if you add a corner twist to it? I can't think of how to do it with regular commuters. can anyone point me where I could learn more on this?
(crap, sorry if I hijacked this thread)


Top
 Profile  
 
 Post subject:
PostPosted: Thu Sep 01, 2005 7:37 pm 
Offline
User avatar

Joined: Sat Dec 02, 2000 8:27 pm
Location: Wilmington, NC, USA
Nice mod!


Top
 Profile  
 
 Post subject:
PostPosted: Fri Sep 02, 2005 4:54 am 
Offline
User avatar

Joined: Wed Oct 31, 2001 4:19 am
Location: Manchester, UK
t_goodchild wrote:
a 4-cycle isn't possible on the cube (except when adding the twisting of the center piece). Is it because it's an odd numbered cycle?

Yes. A quarter turn of one face is an odd perm of corners (and an odd perm of edges), so the parity of the corner perm changes every time you make a quarter turn. Hence the total number of quarter turns in making your 4-cycle (of corner-edge blocks) must be odd, matching the parity of the corner (or edge) permutation.
Quote:
I'm confused about exactly what's possible and what's not on twisty puzzles, how and why those rules change from puzzle to puzzle, how the "math" of these rules work with the combinations of swaps and orientations.

The "rules" don't really change... but you do have to think about the parity changes induced by an elementary move, and these changes can be different for different puzzles. For example, for the megaminx, a one-fifth turn of one face is a 5-cycle of corners (and of edges), so it's an even perm of corners -- that's one way of seeing the "difference" compared with the Cube.

There are indeed puzzles where the permutation parity and the "twist" are coupled (e.g., the brainball, but not the Cube or the megaminx). Again, you have to think about the action of the elementary moves on both those quantities...
Quote:
It's impossible to swap 2 edge or corner pieces on a cube, but is it possible to do if you add a corner twist to it?

No, because it turns out that the basic move (a quarter turn of one face) preserves the total corner twist, modulo 3. Also, the overall permutation parity of corners and edges taken together isn't changed by a quarter turn of one face. The twist and the overall parity are separately conserved here.

You can find all the material you need collected in one place: Jaap's Puzzle Page, especially the maths pages there, and he has many applications to specific puzzles.


Top
 Profile  
 
 Post subject:
PostPosted: Sun Sep 04, 2005 9:08 pm 
Offline
User avatar

Joined: Tue Apr 05, 2005 12:01 pm
Location: Arcadia, California
That's a very nice mod!
so, what's the name of this mod?

-chris joe


Top
 Profile  
 
 Post subject:
PostPosted: Mon Sep 05, 2005 2:23 am 
Offline
User avatar

Joined: Mon Jul 30, 2001 2:50 am
Location: Nottingham, UK
I haven't thought of any yet.
The shape looks like a Chinese lantern and it has 20 sides, but only 10 colours.

Any suggestions? I would really appreciate!
Vadim


Top
 Profile  
 
 Post subject:
PostPosted: Mon Sep 05, 2005 3:33 am 
Offline
User avatar

Joined: Tue Apr 05, 2005 12:01 pm
Location: Arcadia, California
how about, the azn cube 8-)


Top
 Profile  
 
 Post subject:
PostPosted: Tue Sep 06, 2005 7:51 am 
Offline
User avatar

Joined: Mon Jul 30, 2001 2:50 am
Location: Nottingham, UK
What's azn cube?
Vadim


Top
 Profile  
 
 Post subject:
PostPosted: Tue Sep 06, 2005 8:09 am 
Offline

Joined: Tue Oct 07, 2003 10:00 pm
Vadim wrote:
What's azn cube?

It's what people who can write English would call "asian cube". And maybe "Asiaminx" or "Chinaminx" would be better.


Top
 Profile  
 
 Post subject:
PostPosted: Tue Sep 06, 2005 2:22 pm 
Offline
User avatar

Joined: Fri Mar 18, 2005 10:08 am
Location: Scotland, UK
Chinaminx sounds cool. Kinda cute :)

_________________
Never let your fears stand in the way of your dreams. And If your fears are in the way, kick 'em in the nuts. That'll learn 'em!


Top
 Profile  
 
 Post subject:
PostPosted: Wed Sep 07, 2005 3:07 pm 
Offline

Joined: Mon Jan 10, 2005 11:30 pm
Neat, from the top angle picture, it looks a bit like a space capsule like the moon landing astronauts returned in. Lunaminx?


Top
 Profile  
 
 Post subject:
PostPosted: Wed Sep 07, 2005 3:13 pm 
Offline
User avatar

Joined: Thu Jul 28, 2005 10:48 am
Lunaminx sounds ace.


Top
 Profile  
 
 Post subject:
PostPosted: Wed Sep 07, 2005 8:45 pm 
Offline

Joined: Tue Oct 07, 2003 10:00 pm
Kudos to the one who came up with the "minx" suffix. Though, uh... I just looked it up at dictionary.com:

minx
n : a seductive woman who uses her sex appeal to exploit men

So that's why I can't let go of my megaminx?


Top
 Profile  
 
 Post subject:
PostPosted: Wed Sep 07, 2005 9:38 pm 
Offline
User avatar

Joined: Sun Jun 13, 2004 12:45 pm
Location: Rochester, MN
Megaminx - twelve sides? Shouldn't there be 1,000,000 sides? Or call it the dodecaminx?

That's it. I'm making a million sided deep-cut puzzle and calling it the dodecaminx. There will be 45,290 shades of read, 20,204 shades of blue, 30,284 shades of green, and then the rest will be various degrees of black, and maybe some other colors. But not the dark dark orange that you can't distinguish from the red. I hate that color.


Top
 Profile  
 
 Post subject:
PostPosted: Thu Sep 08, 2005 10:25 am 
Offline
User avatar

Joined: Thu Jul 28, 2005 10:48 am
A dodecaminx would be a megaminx with twelve sides. Hence a megaminx.

you'd probibly call yours a polyminx.


Top
 Profile  
 
 Post subject:
PostPosted: Wed Sep 14, 2005 9:46 am 
Offline
User avatar

Joined: Mon Jul 30, 2001 2:50 am
Location: Nottingham, UK
Thanks to everyone who helped to choose the name.
However it's all too complicated...
I think just "Trunkated Megaminx" would do the job.
I am just a bit snowed under and just can't get my head round anything else.
Vadim


Top
 Profile  
 
 Post subject: names
PostPosted: Thu Sep 15, 2005 11:19 am 
Offline

Joined: Tue Mar 04, 2003 11:17 am
StefanPochmann wrote:
Kudos to the one who came up with the "minx" suffix. Though, uh... I just looked it up at dictionary.com:

minx
n : a seductive woman who uses her sex appeal to exploit men

So that's why I can't let go of my megaminx?


I think that the original idea may have been to name it "megamix," as in millions of possible positions, and "mix" sounded too prosaic. "Minx" certainly fits for something which is deceptively complex.

blogan wrote:
Megaminx - twelve sides? Shouldn't there be 1,000,000 sides? Or call it the dodecaminx?

That's it. I'm making a million sided deep-cut puzzle and calling it the dodecaminx.


Because it takes 12 years to solve!

blogan wrote:
There will be 45,290 shades of read, 20,204 shades of blue, 30,284 shades of green, and then the rest will be various degrees of black, and maybe some other colors.


You could do much of the whole spectrum of light put out by the sun!

blogan wrote:
But not the dark dark orange that you can't distinguish from the red. I hate that color.


I've seen "orange" shades which seem to me to be only brown. But there are so many more colors than are being used. Why not make puzzles with burnt sienna, lavender, puce, amber, etc, etc.

Let each of us submit a color scheme for a cube. Does anyone know a good web page for lots and lots of color shades?

Hey Chris, how many colors can you make stickers and tiles?

David J


Top
 Profile  
 
 Post subject: .
PostPosted: Fri Sep 16, 2005 6:09 am 
Offline

Joined: Sat Aug 20, 2005 1:36 pm
To tell the truth, it kinda looks like a rocket ship capsule.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Sep 19, 2005 1:43 pm 
Offline
User avatar

Joined: Tue Mar 15, 2005 2:18 pm
"Hey Chris, how many colors can you make stickers and tiles?"

David J


Currently I've got about 14-16 different colors. I try to order a new "different" color each time I have to order "standard" colors. I'm slowly building up a small collection of colors. The tiles I'm only planning on producing in the standard 6 colors.

Chris

_________________
Twisty Puzzle Replacement Sticker sets for sale:

Buy online at http://www.cubesmith.com


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 25 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 12 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

Forum powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group