Article: 2966 of rec.games.chess.analysis
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From: Dennis Breuker <breuker@cs.rulimburg.nl>
Newsgroups: rec.games.chess.analysis
Subject: Re: Endgame K:2B vs K:N
Date: Tue, 27 Aug 1996 16:10:13 +0200
Organization: University of Limburg, Maastricht, The Netherlands
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Message-ID: <322301C5.3D2F@cs.rulimburg.nl>
References: <32182669.8778283@news.rz.uni-karlsruhe.de> <DwsMBJ.JJ1@exeter.ac.uk>
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D.Regis wrote:
> 
> In article <32182669.8778283@news.rz.uni-karlsruhe.de> peter.schuster@hik.fzk.de writes:
> >Can K:2B win again K:N?
> >
> >Any suggestions?
> 
> They certainly can win.
> 
> Moreover, the win can be forced, but it's difficult e.g. has been
> given up as a draw at GM level (a Korchnoi game, I think).  A computer
> database has been created giving best moves in each position, perhaps
> as a result of this game being discussed.
> 
> Horwitz and Kling looked at this in some detail decades ago and
> discovered a basic defensive position with the defending King near the
> corner and the Knight on "Knight 2" i.e. b2/b7/g2/g7 (bring back
> descriptive notation!).  But the defence can be broken down by
> Zugzwang, the King and Knight getting separated and the Knight lost.
> 
> Timman and Speelman had this in their candidates' match, and according
> to Timman's annotations (reproduced in Timman's Selected Games,
> CADOGAN) both players followed the computer's advice of "best" moves
> for much of the play.  Timman, who had access to the database during
> the adjournment, won.

For the complete story, the game, and some hints for playing this endgame see:
  Breuker, D.M., Allis, L.V., Herik, H.J. van den and Herschberg, I.S. (1992).
  A Database as a Second. ICCA Journal, Vol. 15, No. 1, pp. 28-39.

Dennis.


From info!dregis Thu Sep  5 10:09:26 BST 1996