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 Post subject: Taking requests for (impossible) designs
PostPosted: Thu Dec 19, 2013 8:58 am 
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I'm BORED - I need a design challenge!

I am almost finished with my proportional 7x7x7, made from a KO cubic 7x7x7. I was going to use magnets, but then I got the idea to use metal tabs that slide through the gaps between pieces.

If you have any ideas for puzzles that are considered impossible, I would appreciate the challenge.

P.S. I don't want goofy things like 31x31x31, a void crazy mixup 7x7x7, or a 4x4x4 master helicopter axis skewb :lol: I'm sure these are possible, but I prefer to not spend 100 weeks designing one puzzle.

I will post my void 4x4x4 idea soon. :mrgreen:

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Thu Dec 19, 2013 9:07 am 
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I've got one that I've tried to design again and again, but I simply can't figure out how to do it.
The challenge: design a deeper-than-origin circle 3x3x3 cube. Unlike a normal circle 3x3, where shallow turns are made to cause the circles to not move, you must make a deeper-than-origin turn to keep the circles stationary.
Another way to look at this is that if you make a shallow turn on this puzzle, the circle on that layer and on the opposite layer will also turn along with the side.
I really want to see this puzzle someday, because this puzzle would contain the edges, corners, anti-edges, UD pieces, and UDF pieces from the complex 3x3x3. It would be the closest thing to a complex puzzle we would have (as of right now), and it would be really cool to try and solve a subset of that puzzle, which the deeper-than-origin circle 3x3x3 is.
I honestly think gears may be needed to design this, but I still have no idea how to do it. And this doesn't just go for E-cubes, I'd appreciate anyone taking on this challenge. Good luck... :twisted:

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Thu Dec 19, 2013 9:12 am 
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A deeper than origin circle cube? Challenge accepted! :)

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Thu Dec 19, 2013 9:28 am 
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What about an edge-turning icosahedron which has a deep cut or the same puzzle but with a cut that only goes to the corners that the edge is adjacent to, so that the corner is split into 5 sections. That should complete the axes series of icosahedra. We already have a face and corner turning one (not both at the same time, of course), but not an edge turning one. Good luck!

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Thu Dec 19, 2013 9:46 am 
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How about a face-turning small rhombicuboctahedron? Bonus points if you can find a set of cuts that gives the same cut pattern on all square faces.

Or a hybrid Starminx? Bonus points if the Edge-turning Starminx is included or you manage to hybridize 3 or even all four.

Or a Starminx shapemod for which solving by shape offers the same challenge as solving the normal starminx with 12 face colors?

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Thu Dec 19, 2013 10:27 am 
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One key outstanding design challenge is a fully functional (non-magnetic) 24 Cube whose internal mechanism prevents lockups. Jason Smith has come close with a design that disallows jumbling moves. Matt Shepit's original shells design had rough movement, though Claus has an instance that seems to work better, from which he made a massive tetrahedron.

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Thu Dec 19, 2013 10:40 am 
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How about a Big Chop? :D

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Thu Dec 19, 2013 10:44 am 
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^Agreed. A big chop would be awesome!


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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Thu Dec 19, 2013 10:45 am 
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Edge turning rhombicuboctahedron.

Zem's Super Octocube +shallow Dino cube + Deceth + mixup cube. It would look identical!

Mixup master pentultimate.

Gear master penultimate similar to the gear cube.

Speedcube-able void cube.

That's all I have.

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Thu Dec 19, 2013 11:14 am 
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In this topic I've posted an idea I've had for a while, would be awesome if someone could design it! Good luck with whatever you end up designing!

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Thu Dec 19, 2013 1:51 pm 
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Helicopter cube - skewb - little chop - mini cube -dino cube all in one puzzle

A master face turning octahedron mixed with a master corner turning octahedron.

Big chop.

Royal Tetrahedron n a cube form and symmetrical form

Chopasaurus

That's it for now that I can think of.

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Thu Dec 19, 2013 2:20 pm 
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See here.

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Thu Dec 19, 2013 4:07 pm 
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I posted about a deep and interesting design challenge a little while ago (can't immediately find my post using search for some reason). The challenge is: Make a 3x3x3 cuboid where two opposite faces can't rotate at all, and the other four are greater-than-deep-cut only.

Alternatively you can view this as a cube where at any given time there are two faces which can't rotate and the other four can, but when you make an ordinary shallow cut turn on a face then for the faces other than the opposite one in swaps which of them can and can't rotate. This way of viewing it might be easier to understand, although the other one illustrates why the puzzle is doctrinaire.

What really makes the challenge interesting is the added requirement that as long as you're only turning two opposite faces they should be able to rotate freely and independently, without a partial move of one face locking the opposite one. For example, slice moves should be allowed.

I honestly don't know how to design a mechanism for this puzzle, so I present it to you as a challenge.


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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Thu Dec 19, 2013 4:09 pm 
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rubikcollector123 wrote:
Speedcube-able void cube.

Funny you say that...
Attachment:
void 1.jpg
void 1.jpg [ 101.45 KiB | Viewed 2489 times ]

Attachment:
void 2.jpg
void 2.jpg [ 113.56 KiB | Viewed 2489 times ]

I've actually had this design completed for months but haven't gotten around to printing it yet. I think I need to play with the mechanism, filets etc. a bit more.
Bram wrote:
I posted about a deep and interesting design challenge a little while ago (can't immediately find my post using search for some reason). The challenge is: Make a 3x3x3 cuboid where two opposite faces can't rotate at all, and the other four are greater-than-deep-cut only.

I actually have a mechanism for this puzzle all worked out, but actually designing it is proving to be a whole different challenge in itself :shock:

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Thu Dec 19, 2013 11:46 pm 
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I'd like to see a Dino 4x4x4, or a super octocube 2x2x2. I know the super octocube 2x2x2 would not be hard as a super octocube 3x3x3 has already been made.


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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Thu Dec 19, 2013 11:53 pm 
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Essentially a 48 cube then?
I believe that cube already exists with a good mechanism.

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Fri Dec 20, 2013 12:15 am 
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Tuttchop!


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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Fri Dec 20, 2013 1:42 am 
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Ok, here goes. Simple, but VERY desired requests:

Circle 5x5x5, 6x6x6, 7x7x7 or any higher you think you can go
Void 5x5x5, 6x6x6, 7x7x7 or any higher you think you can go
an 8x8x8 megaminx (an emperor kilominx?) with it's 8x8x8 hexaminx cubic transformation
a petahexaminx.
You said impossible, right? Are you truly that sought after genie in a bottle?
Give me a working design with high likelihood of functionality, and I'll sacrifice one of my regenerations to sponsor it!
(sacrifice because my wife, River Song, would kill me!) :roll:


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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Fri Dec 20, 2013 6:06 am 
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Do you think this is to much? But some are already made.

http://users.skynet.be/moz071262/Applet ... online.htm

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Sat Dec 21, 2013 11:07 pm 
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I just remembered - how about the original concept for the Rainbow Nautilus? Originally there were to be 8 segments in 10, 20, etc. degrees, but the 10 and the 80 were combined because the 10 was fragile. The result was a far easier puzzle, unfortunately.

I think it would look great as a cube, sort of like a Square-1.


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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Sun Dec 22, 2013 7:58 am 
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A while back I proposed this puzzle- viewtopic.php?f=9&t=22436 -which was deemed basically impossible to build. Over to you. :-)

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Sat Jan 04, 2014 1:57 pm 
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I'd like to see a void 3x3 that uses the same concept as a mefferts holey megaminx. :twisted: :lol:

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Sat Jan 04, 2014 5:50 pm 
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A corner-turning sphere. :lol:

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Sat Jan 04, 2014 6:18 pm 
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A corner turning sphere already exists. It is called a ball.

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Sat Jan 04, 2014 7:10 pm 
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12354q wrote:
A corner-turning sphere.

This actually gave me an idea. How about a puzzle with a bunch of intersecting spheres that can rotate in 3D and stop at different points? SO like a 2D circle puzzle but taken to 3D.
For example, a 3D Geranium... :twisted:

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Sun Jan 05, 2014 12:27 pm 
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I had an idea for a 4x4 gear cube, and I'd really like to see a smallish close-to-proportional 2x4x6.


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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Sun Jan 05, 2014 1:00 pm 
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-Pyraminx+ mastermorphix ( 3x3 shapemod)
- A cube that it's cut pattern are only regular David stars ( 6 pointed stars)
- A cube that have pieces at the inside than can be part of the solve, on tge scramble pieces would become internal and you have to take them out and solve them
- an hexaminx (like calvins) that has also 3x3 moves: see the pattern of the hexaminx, there are cuts that could be a 3x3
- big chop, and combination of all 4 starminxes

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Sun Jan 05, 2014 2:29 pm 
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maybe i'm going to far, but you said "impossible"

Self solving cube

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Sun Jan 05, 2014 2:35 pm 
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benpuzzles wrote:
12354q wrote:
A corner-turning sphere.

This actually gave me an idea. How about a puzzle with a bunch of intersecting spheres that can rotate in 3D and stop at different points? SO like a 2D circle puzzle but taken to 3D.
For example, a 3D Geranium... :twisted:

That sounds awesome (and slightly impossible), but how on earth did "corner-turning sphere" give you that idea?

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Mon Jan 06, 2014 7:48 am 
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A truncated cube with an octagram inscribed on each octogon face and undivided triangle faces.

A truncated dodecahedron with a decagram inscribed on every decagon face and undivided triangle faces.

For extra challenge, make them the same size as a trucated 3*3*3 of standard size and a truncated megaminx of standard size.

Fisher Treasure Chest that can open in any state with a cubic shape.

Treasure Chest Cube that requires a complete solve and then extended to other cuboids.

Treasure Chest Skewbs, Helicopter cubes, and little chops.

and just to be silly:
void geared mixup ghost cube.

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Mon Jan 06, 2014 8:36 am 
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Challenge accepted for the treasure chest skewb. :D

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Mon Jan 06, 2014 10:07 am 
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Hi! I like your idea to create something which seems impossible :D
I dont know if this can work or if it exists already.
But can you build a megaminx which is faceturning like the original megaminx but can also turn like a cube (U,D,F,B,R,L). To achieve this you have to cut through the centers.
I cant imagine a mechanism which can combine those moves :-)


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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Mon Jan 13, 2014 3:59 am 
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Maybe it's not impossible to design, and maybe this cube also exists (because Oscar exists :) ), but I haven't found it in the museum.

Waltz-cube. Looks like standard Rubik's, but when you turn any face for 90 degrees clockwise, its corner cubies are turning for 120 degrees counterclockwise in their places (or maybe - also clockwise; or maybe - cubies with white - CW, cubies with yellow - CCW).

So, moves (F)x4 and (F')x4 will not be equal.


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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Mon Jan 13, 2014 9:24 am 
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I've had an idea for a 3x3 that can compress down to roughly the size of a floppy cube. Makes for easier pocketability and portability :D
I sort of have an idea of how it could be made, but lack the skill or time to mess with it.

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Tue Jan 21, 2014 11:41 pm 
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I would really like to see a super octocube combined with a mix-up cube. If you want to make it even more crazy, do a super octocube with a mix-up cube plus. And even more crazy than that would be a cube with all the same kinds of cuts, but does turns every 30 degrees instead of 45. I imagine it will have to be pretty large to keep the smaller pieces from becoming too small.


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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Wed Jan 22, 2014 1:23 am 
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How about a 7x7/dino cube hybrid? :D

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Wed Jan 22, 2014 7:54 am 
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A series of Easter Egg puzzles. That is, Egg shaped puzzles with the mechanism oriented within the solid to maximize shape shifting while still being symmetry that can be opened when fully solved, but the separation isn't along a cut plane, but rather a zig-zag long the egg's equator.

Taking the morphegg(3*3*3 egg) for example, instead of taking an entire layer off when solved(making the egg look sliced at an angle), the opening would remove the pieces around the pointy end(for the tri-colored versions, those above the band) better yet, make it so the split is long the midline of the equatorial band Similiar can be done with Fisher's Golden Eggs.

Treasure Chest Masterballs: one version that splits at the equator, the other splits long a pair of meridians. Bonus points if combine with a master master ball or the easter egg idea.

A pair of treasure chest cubes that, once opened can be combined into a treasure chest Domino and Treasure Chest 3*3*4. Bonus points if the Cubes and 3*3*4 require a complete solve.

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Sat Jan 25, 2014 6:41 pm 
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A skewb that can turn in different ways this video explains what I mean

http://www.youtube.com/watch?v=2PjdG3jw0wY

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Sun Jan 26, 2014 7:54 am 
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Michael, Oskar is correct (surprisingly :lol: ) in that the cut you describe when the Skewb is in mid-turn is not planar and so cannot be used as a turning face without creating extra cuts :cry:

Some pictures, this is the skewb mid-turn as you describe, with the thick black line showing the turning plane you suggest:
Attachment:
File comment: Skewb mid-turn
SKEWB 1.png
SKEWB 1.png [ 28.92 KiB | Viewed 1126 times ]
This shows the turning planes used. The pink one is the one for the skewb, while the brown one is the plane you suggest (the red line is the orthogonal axis:
Attachment:
File comment: Axes
SKEWB 2.png
SKEWB 2.png [ 43.42 KiB | Viewed 1126 times ]
As you can see, the black cut lines do not lie on a plane. I think that these would be the new face cuts required:
Attachment:
File comment: New face cuts
SKEWB 3.png
SKEWB 3.png [ 11.13 KiB | Viewed 1126 times ]
It does look quite pretty ...

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Last edited by Gus on Sun Jan 26, 2014 9:12 am, edited 1 time in total.

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Sun Jan 26, 2014 8:50 am 
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Gus wrote:
Michael, Oskar is correct (surprisingly :lol: ) in that the cut you describe when the Skewb is in mid-turn is not planar and so cannot be used as a turning face without creating extra cuts :cry:



What if you used some weird shaped cuts like on the icosaix?

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Sun Jan 26, 2014 10:12 am 
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The next iteration of the Menger Sponge Cube(the Void cube being the first iteration). That is to say, a 9*9*9 with voides through its 2nd, 34th-6th, and 8th layers to match the second iteration of the process that produces the menger sponge. Bonus points if each 3*3*3 sub-cube is a fully functional void cube in its own right. I would suggest the 3rd iteration, but we don't even have a normal 27*27*27 yet.

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Sun Jan 26, 2014 10:20 am 
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Another Idea I had was a Triple fused void petaminx.

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Sun Jan 26, 2014 11:55 pm 
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I will try to make a skewb that can make those turns, as my favorite type of puzzle is the kind that has extra possible turns, but looks like it doesn't. My weird 5x5x5 is a good example of this.

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Mon Jan 27, 2014 9:24 am 
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E-Cubes Designer X wrote:
I will try to make a skewb that can make those turns, as my favorite type of puzzle is the kind that has extra possible turns, but looks like it doesn't. My weird 5x5x5 is a good example of this.


Thanks for it.

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Mon Jan 27, 2014 12:05 pm 
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I made a thread a while back about the Skewb plus idea. Here it is: http://twistypuzzles.com/forum/viewtopic.php?f=9&t=26182&hilit=Idea
I hope this gets made, as I am sure many people have thought of this independently, because it would be a great challenge with those extra pieces.

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Mon Jan 27, 2014 12:11 pm 
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BelcherBoy2000 wrote:
I made a thread a while back about the Skewb plus idea. Here it is: http://twistypuzzles.com/forum/viewtopic.php?f=9&t=26182&hilit=Idea
I hope this gets made, as I am sure many people have thought of this independently, because it would be a great challenge with those extra pieces.



Thats along my idea. So I wonder how hard it's going to make?

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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Mon Jan 27, 2014 11:28 pm 
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Joined: Mon Mar 07, 2011 11:08 pm
Master Helicopter Skewb
(by which I mean Master Helicopter Cube + Master Skewb)


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 Post subject: Re: Taking requests for (impossible) designs
PostPosted: Tue Jan 28, 2014 1:55 am 
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Joined: Thu Dec 31, 2009 8:54 pm
Location: Bay Area, California
Gus wrote:
[...]the Skewb is in mid-turn is not planar and so cannot be used as a turning face without creating extra cuts :cry:

Isn't this covered by the Splint Jing's Pyraminx?

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