From cube-lovers-errors@mc.lcs.mit.edu Fri Dec 4 11:30:15 1998 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 LAA05048 for ; Fri, 4 Dec 1998 11:30:14 -0500 (EST) Precedence: bulk Errors-To: cube-lovers-errors@mc.lcs.mit.edu Message-Id: <19981204043241.26555.rocketmail@send106.yahoomail.com> Date: Thu, 3 Dec 1998 20:32:41 -0800 (PST) From: Han Wen Subject: Re: Method for Solving the Professor's Cube (5x5x5) To: Steve LoBasso Cc: Cube-Lovers@ai.mit.edu Hi, > To move the 4th layer mid centrals into place: > > central D-face bm to central F-face dm: F l D l' D' F' > This is a stunningly elegant move. You've reduce the difficulty in solving the 4th layer by an order of magnitude. I tried this move out, actually it swaps two centrals: F-face md <-> D-face lM (mid central swap) F-face rd <-> D-face lf (right central swap) Beautiful move. There is one particular move that I haven't figured out yet. It pops up occasionally when I solve the edges of the D-layer. Sometimes I end up with every cubie in place except for two right centrals on adjacent faces. For example: F-face rD and L-face Lf. The two pieces only need to be swapped. No flipping is needed. Does anyone know how to perform this move? I've been beating the Puzzler program for a while, but I have been unsuccessful so far. ______________________________________________ Han Wen Applied Materials 3050 Bowers Ave, MS 1145 Santa Clara, CA 95054 e-mail: Han_Wen@amat.com / hansker@yahoo.com