From cube-lovers-errors@mc.lcs.mit.edu Fri May 7 11:26:58 1999 Return-Path: Received: from sun28.aic.nrl.navy.mil (sun28.aic.nrl.navy.mil [132.250.84.38]) by mc.lcs.mit.edu (8.9.1a/8.9.1-mod) with SMTP id LAA04662 for ; Fri, 7 May 1999 11:26:57 -0400 (EDT) Precedence: bulk Errors-To: cube-lovers-errors@mc.lcs.mit.edu Date: Fri, 7 May 1999 12:27:25 +0100 From: David Singmaster To: mouse@rodents.montreal.qc.ca Cc: cube-lovers@ai.mit.edu Message-Id: <009D7C0D.6D45DA64.17@ice.sbu.ac.uk> Subject: Re: Reinventing (and some edge-flipping techniques) Der Mouse's message reminds me of a point which I had meant to include. In my algorithm, most of the moving involves just two adjacent faces, which I find easier to remember and to carry out. The Spratt wrench (which I don't really know, so I'll have to try it, BTW, who was/is Spratt?) doesn't have quite this simple structure. DAVID SINGMASTER, Professor of Mathematics and Metagrobologist School of Computing, Information Systems and Mathematics Southbank University, London, SE1 0AA, UK. Tel: 0171-815 7411; fax: 0171-815 7499; email: zingmast or David.Singmaster @sbu.ac.uk