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From: scs@wucs.UUCP (Steve Swope)
Newsgroups: net.games
Subject: Re: Rubik's 4x4x4 cube
Message-ID: <1129@wucs.UUCP>
Date: Sat, 31-Aug-85 12:59:10 EDT
Article-I.D.: wucs.1129
Posted: Sat Aug 31 12:59:10 1985
Date-Received: Sun, 1-Sep-85 06:06:50 EDT
References: <115@duvel.UUCP> <3600005@prism.UUCP>
Organization: Washington U. in St. Louis, CS Dept.
Lines: 19
Summary: There is one!

In article <3600005@prism.UUCP>, mer@prism.UUCP writes:
> 
> Not an answer to your question but your query made me think "wouldn't it
> be neat to have a 4x4x4x4 Rubik's cube", since that's the logical
> extension.  I wonder how you'd solve it.

	Such a device exists.  It's called "Rubik's Revenge", is
manufactured by Ideal*, and (I've heard) is alse designed by Erno Rubik.
I've also heard that he has developed 5^^3 and 6^^3 extensions, and is
working on a 7^^3 extension (none of these have been marketed, to my
knowlege *sigh*).
	I solved the 4^^3 version by gathering the centers (each 4
subcubes) and edges (each 2 subcubes) and applying my 3^^3 solution
to that.
	Incidentally, Ideal* also makes "Pocket Rubik's Cube", a 2^^3
version. (It's equivalent to solving only the corners on a 3^^3.)

*DISCLAIMER: Ideal is somebody's trademark, and I've never even
	considered working for them.