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 Post subject: Krystian's Twist by OSKAR
PostPosted: Sat Aug 27, 2011 3:09 am 
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Hi Twisty Puzzles fans,

Krystian's Twist is an idea by Krystian Wilisowski, which he posted at the Twisty Puzzles Forum. Krystian worked out how to turn a tridiminished icosahedron into a jumbling twisty puzzle. Actually, his version was more complex with four slices. Carl Hoff suggested that even the jumbling three-slice puzzle could be interesting. This is that three-slice version.

The puzzle has an interesting seven-move jumbling sequence, which cannot be reversed without jumbling. It took me several video attempts to demonstrate it correctly, because the sequence is sort-of hard to remember, see and replicate.

The geometry of this puzzle is a deep-cut edge-turning icosahedron, of which only three of its 15 axes are enabled. It is a little brother of Big Chop, so to say.

Watch the YouTube video.
Buy the puzzle at my Shapeways Shop.
Read more at the Shapeways Forum.
Check out the photos below.

Enjoy!

Oskar
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Krystians Twist - prototype - view 1.jpg
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Krystians Twist - prototype - view 2.jpg
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Krystians Twist - prototype - view 3.jpg
Krystians Twist - prototype - view 3.jpg [ 46.8 KiB | Viewed 3536 times ]

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Krystians Twist - prototype - view 4.jpg
Krystians Twist - prototype - view 4.jpg [ 45.41 KiB | Viewed 3536 times ]

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 Post subject: Re: Krystian's Twist by OSKAR
PostPosted: Sat Aug 27, 2011 5:25 am 
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Very Good Puzzle! Excelent Turn!!!
:mrgreen:

this is like Timur Contelation Six !!!

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 Post subject: Re: Krystian's Twist by OSKAR
PostPosted: Sat Aug 27, 2011 7:52 am 
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Thats such a good idea for a puzzle with this shape! Is the bottom triangle attached to the core?

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 Post subject: Re: Krystian's Twist by OSKAR
PostPosted: Sat Aug 27, 2011 8:44 am 
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cubedude76 wrote:
Is the bottom triangle attached to the core?
Correct. Well spotted!

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 Post subject: Re: Krystian's Twist by OSKAR
PostPosted: Sat Aug 27, 2011 9:41 am 
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Wow at needing 7 moves for jumbling. Who figured out that? What does this look like if it was a sphere?
grigr wrote:
this is like Timur Contelation Six !!!
Oh! Nice correlation. That is one of my favorite threads.

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 Post subject: Re: Krystian's Twist by OSKAR
PostPosted: Sat Aug 27, 2011 6:29 pm 
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Oskar wrote:
Carl Hoff suggested that even the jumbling three-slice puzzle could be interesting. This is that three-slice version.
Oh... I'm SO glad I was right. This IS very very interesting.
Oskar wrote:
The puzzle has an interesting seven-move jumbling sequence, which cannot be reversed without jumbling.
May I ask how you've proven this cannot be reversed without jumbling. Do the pieces have orbits similiar to the helicopter cube and this jumbling move causes pieces to change orbits? These things are so hard for me to see without being able to hold the puzzle in my hands.
Oskar wrote:
The geometry of this puzzle is a deep-cut edge-turning icosahedron, of which only three of its 15 axes are enabled.
Wow! Another very interesting observation. It again makes me question the meaning of deep cut. In this thread one of the properties of a deep cut was that it cut the puzzle into two isomorphic groups. Its not clear to me that is the case here. Yet its obvious these same cuts on a Big Chop are deep cut. Hmmm... how does one go about proving (or disproving) the two halves are isomorphic groups on a puzzle like this?

Carl

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 Post subject: Re: Krystian's Twist by OSKAR
PostPosted: Sun Aug 28, 2011 1:48 am 
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Nice puzzle and (as always) nice video. Straight to the point. No useless words.
grigr wrote:
this is like Timur Contelation Six !!!
Is it really?
I mean both have three possible twists but Oskar's puzzle does not allow 90┬░-twists.

Andreas


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 Post subject: Re: Krystian's Twist by OSKAR
PostPosted: Tue Aug 30, 2011 8:43 am 
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Congratulations Oskar. You keep pushing the bar further and further up as to how impressive twisty puzzles can become. I look forward to when the pyramid version (with extended tips) is eventually shown.

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 Post subject: Re: Krystian's Twist by OSKAR
PostPosted: Tue Aug 30, 2011 9:27 pm 
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Amazing work Oskar. I'm not even going to try and understand this.

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 Post subject: Re: Krystian's Twist by OSKAR
PostPosted: Fri Oct 14, 2011 5:01 pm 
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Luke wrote:
I look forward to when the pyramid version (with extended tips) is eventually shown.

Digging around in Oscar's shop and I spotted the shape mod you mentioned.

http://www.shapeways.com/model/317182/krystian_s_pyramid.html

I'm puzzled. I noticed the puzzle with the larger corners was $160.41 and the Krystian's Twist as presented here was $168.93. Does this mean the parts aren't interchangable between the two puzzles and the common pieces are smaller on Krystian's Pyramid?

Carl

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 Post subject: Re: Krystian's Twist by OSKAR
PostPosted: Fri Oct 14, 2011 5:03 pm 
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Well, I presume it's markup.

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 Post subject: Re: Krystian's Twist by OSKAR
PostPosted: Fri Oct 14, 2011 5:40 pm 
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I suppose Oskar chose not to put markup because this mod hesn't been prototyped yet. I'm pretty sure that's what I'd do.

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