Message #2031

From: Roice Nelson <>
Subject: Re: [MC4D] Re: Super Puzzle Sunday!
Date: Sun, 19 Feb 2012 10:13:54 -0600

Hi Ed,

You will be interested to read this short thread from late
the problem of finding an "optimize" procedure. Melinda shared some nice
visual analogies to help think about what an optimizer would do. It does
seem like a difficult problem!


On Sun, Feb 19, 2012 at 4:17 AM, Eduard <> wrote:

> "Shortest" solver vs "many" solver.
> I have discovered only now that in MagicTile vs 2 after an application of
> a macro the natural undoing with the opposite mouse button costs a lot of
> twists. Instead of this you must undo the macro application by ctrl Z and
> this is possible! I very often undo macro applications because I’m learning
> by doing. In the program MPUlt there is an option "optimize" which corrects
> that situation partially.
> A perfect "optimize" procedure is probably not easy to implement.
> Iteratively eliminate local identity groups of twists.