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Subject: Re: black to move... does g5 win for black?

Author: Dann Corbit

Date: 01:18:15 03/04/05

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On March 04, 2005 at 02:58:55, Kurt Utzinger wrote:

>On March 03, 2005 at 23:41:27, Dan Ellwein wrote:
>
>>[d]8/R4ppk/5p2/P6p/7r/1K2P3/8/8 b - - 0 32
>
>      I very much doubt that 32...g5 wins. Of
>      course White should not play 33.Rxf7 and
>      prefer 33.Rc7 instead with the threat to
>      march with its a-pawn I think.
>      Kurt

Probably, Rh1 is the best move.

Strange that none of my programs saw Rc7 (or Rb7, which is what I thought up so
that I could aim for this formation):
[D]8/1R3p1k/5p2/P5pp/7r/1K2P3/8/8 b - -
[D]8/1R3p1k/5p2/P5pp/4r3/1K2P3/8/8 w - -
[D]8/1R3p1k/P4p2/6pp/4r3/1K2P3/8/8 b - -
[D]4r3/1R3p1k/P4p2/6pp/8/1K2P3/8/8 w - -
[D]r7/PR3p1k/5p2/6pp/8/1K2P3/8/8 b - -

But I think that black still wins that race.

That might be why the programs always play Rxf7 in analysis.

I am running several programs at longer time control.  I can't see how white can
win with Rc7, but I lack imagination sometimes.



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