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Subject: Re: Endgame Position : What do Fritz 8 and Shredder 7 say?

Author: Dieter Buerssner

Date: 04:08:56 01/02/03

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On January 01, 2003 at 11:41:37, Roy Brunjes wrote:

>I came across this endgame in a software course I am using for chess training.
>I gave the position to Hiarcs 8, Junior 7, and Chessmaster 9000 and they seem to
>miss the point.  I am wondering what Fritz 8 and Shredder 7 have to say about
>it.
>
> 5k2/7p/6p1/1p3p2/2r2P2/5P2/PP5P/5K1R b - -
>
>In this position, with Black to move, Rc2 is the stated best move.  I have no
>argument with that and neither do any of the programs I tried.  The rub comes
>after this:
>
>1. ...  Rc2
>2. Rg1
>
>Which gives this position:
>
> 5k2/7p/6p1/1p3p2/5P2/5P2/PPr4P/5KR1 b - - [corrected side to move]
>
>Now White is attempting to activate his rook.  Programs I have tried (listed
>above) all want to play 2. ... Rxb2 after searches running for 3-4 minutes
>(admiteddly on my slow PIII 500 MHz laptop).  This leads to a much more
>difficult ending that Hiarcs 8 was unable to win against me (and I'm a Class C
>player) at a time control of 10 mins + 10 secs per move.  That tells me that the
>move Rxb2 is probably not best.

What did you play after Rxb2? Yace switched after a good hour from Rxh2 to Rxb2.
Rg2 RxR KxR leads to a won pawn endgame for black.

Regards,
Dieter



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