Date: 7 December 1980 1401-est From: Bernard S. Greenberg Subject: Re: That 28 move Plummer Cross To: DDYER at MIT-Multics Cc: McKeeman.PA at PARC-Maxc, CUBE-LOVERS at MIT-MC I do not believe that (r u r' u')^3 is a local maximum. An move other than r, u, r', u', (e.g., l) seems to pervert it further than any of the four which bring it back.