From BRYAN@wvnvm.wvnet.edu Thu Jan 12 21:14:10 1995 Return-Path: Received: from WVNVM.WVNET.EDU by life.ai.mit.edu (4.1/AI-4.10) for /com/archive/cube-lovers id AA27432; Thu, 12 Jan 95 21:14:10 EST Message-Id: <9501130214.AA27432@life.ai.mit.edu> Received: from WVNVM.WVNET.EDU by WVNVM.WVNET.EDU (IBM VM SMTP V2R2) with BSMTP id 1639; Thu, 12 Jan 95 21:13:36 EST Received: from WVNVM.WVNET.EDU (NJE origin BRYAN@WVNVM) by WVNVM.WVNET.EDU (LMail V1.2a/1.8a) with BSMTP id 0846; Thu, 12 Jan 1995 21:13:36 -0500 X-Acknowledge-To: Date: Thu, 12 Jan 1995 21:13:35 EST From: "Jerry Bryan" To: "Cube Lovers List" Subject: Re: superflip In-Reply-To: Message of 01/12/95 at 19:47:42 from mreid@ptc.com Another thought. It would seem to me that under either metric, the position halfway through ought to be "symmetric". I am not sure just what "symmetric" means here, and my use of the word is largely arm waving similar to the use of "symmetric" to describe local maxima prior to "Symmetry and Local Maxima". But if such a "symmetric" position could be identified, it should be quite easy to search from it back to Start or back to Superflip in a minimal number of moves. = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Robert G. Bryan (Jerry Bryan) (304) 293-5192 Associate Director, WVNET (304) 293-5540 fax 837 Chestnut Ridge Road BRYAN@WVNVM Morgantown, WV 26505 BRYAN@WVNVM.WVNET.EDU