Message #2048

From: Roice Nelson <>
Subject: Re: [MC4D] Re: 4D-interactive puzzles in MagicTile
Date: Tue, 06 Mar 2012 20:13:55 -0600

Hi Andrey,

I went ahead and made your suggested change this evening. So skew puzzles
will twist CCW on a left click regardless of the side you click. It feels
like a definite improvement for both the IRPs and the 4D skew polyhedra, so
thanks again for suggesting that… link to


On Tue, Mar 6, 2012 at 10:03 AM, Andrey <> wrote:

> Roice,
> New puzzles are beautiful! It’s very nice to see these sceletons of our
> familiar 4D bodies and wander around them :)
> I solved only one puzzle so far - bitruncated simplex (my favorite
> polytope :) ) in F:0:0:1 slicing. It was not very easy, and one of main
> problems is that twising rotation depends on side of face that you click:
> if you see one side, face twists clockwise, but if you go to the other side
> and make the same click, it twists counterclockwise. I think that it’s not
> difficult to fix.
> This puzzle has a kind of "global non-orientability": if you have wrong
> oriented edge, you can’t reorient it by moving around the vertex, you have
> to make a loop around a tube. I guess that same effects will be in 5x5 and
> 7x7 duoprisms (that are actually just another implementations of planar
> tori :) )
> Thank you for these puzzles!
> Andrey