Message #2560

From: Andrey <>
Subject: [MC4D] Re: RefleCube: a reflection on the Rubik’s Cube
Date: Tue, 18 Dec 2012 13:42:12 -0000

And in mirror X each corner stays in its tetrahedron.


— In, Melinda Green wrote:

Ah ha, I think I see that there are 3 orbits corresponding to the 3
major planes. Each edge piece always stays within it’s plane.

On 12/17/2012 8:09 PM, schuma wrote:
I don’t get it. How can you turn a face by 90 degrees on Mirror + only, or Mirror X only? I think it’s impossible because of the orbit constraints. And the centers never move, so you can’t play any trick on the global orientation.


— In, "Andrey" wrote:

Good puzzle about 90 deg twist. I can do both VERY quickly :)
And mixed puzzle needs two reflections.


— In, Melinda Green wrote:

Indeed, your new puzzle is awesome, Nan! I find your UI to be very easy
to understand and manipulate. I was able to solve the Mirror + version
intuitively which surprised me. I did restart a few times when I felt
stuck near the end so maybe that let me skip the whacky things that can
happen. I like this puzzle a lot, perhaps because so many things that
are tricky to do in the original puzzle can be done here with a single

For those wanting to see reflection moves in David’s MC3D, the key is to
type ctrl-q before a mouse click.

Here is a puzzle: What is the simplest way to perform a 90 degree face
twist on the Mirror + or Mirror X puzzles?



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