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Article #64Re: Problem
From: Laurence Schmitt
Date: Tue, 10 Sep 1985 18:23
Date: Tue, 10 Sep 1985 18:23
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1332 bytes
> > > White to move: Adjudicate! > WK-c7 > WP-d5 > BK-d4 > BB-a7 > BB-a8 > > Submitted on behalf of A. J. Roycroft [by Ken Thompson] > (editor of EG magazine.) Don't look further if you don't want my answer... My analysis says it's a draw: 1. d6 Kc5 2. d7 Bb6+ 3. Kc8 Kc6 4. d8=N+! The key move. If instead 4. d8=Q, Black wins with 4...Bb7+ 5. Kb8 B:d8. I'm not sure what the general case is of 2 B's vs. a N (i.e., whether or not there are any tricks for the weaker side to beware), but the given position is completely drawn because of the plight of the Black B on a8: Try 4...Kd6 5. Nb7+ Kc6 (or 5...K other 6. Kb8) 6. Kb8 and Black either stalemates or loses his B. Similarly 4...Kb8 5. Nb7 Ka6 6. Kb8! -Larry Schmitt
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site cca.UUCP Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!cbosgd!ihnp4!ucbvax!decvax!cca!larry From: larry@cca.UUCP (Laurence Schmitt) Newsgroups: net.games.chess Subject: Re: Problem Message-ID: <4080@cca.UUCP> Date: Tue, 10-Sep-85 14:23:53 EDT Article-I.D.: cca.4080 Posted: Tue Sep 10 14:23:53 1985 Date-Received: Thu, 12-Sep-85 12:43:59 EDT References: <4284@alice.UUCP> Organization: Computer Corp. of America, Cambridge Lines: 41