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Subject: Re: Position from yesterday, Rxc7!!, problem for all Rybka versions.

Author: Steve Maughan

Date: 14:03:15 02/09/06

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Terry,

>>1.Rxc7!! Rxc7 2.Kd6 Rc8 3.Kd7 Rh8 4.c7 Kf6 5. c8Q Rxc8 6.Kxc8 and white wins!
>
>I know the winning line, it's very simple. After the Rooks are exchanged White
>picks up the a6 pawn and Queens on the a-file with it's a5 pawn much faster
>than Black can, so Black is lost.

I think you're right - it is a win for white but it's not simple.  After White
picks up the pawn on a6 the black king can get access to a8.  This means that
the white king need to march over to the king side to mop up the black pawns
before queening.  It's not a trivial win for a computer by any means.

Steve

• Re: Position from yesterday, Rxc7!!, problem for all Rybka versions. Terry McCracken 15:37:59 02/09/06
  • Re: Position from yesterday, Rxc7!!, problem for all Rybka versions. Steve Maughan 16:41:26 02/09/06
    • Re: Position from yesterday, Rxc7!!, problem for all Rybka versions. Mark Ryan 17:02:55 02/09/06
      • Re: Position from yesterday, Rxc7!!, problem for all Rybka versions. Steve Maughan 17:27:02 02/09/06
      • Re: Position from yesterday, Rxc7!!, problem for all Rybka versions. Robin Smith 17:24:32 02/09/06
        • Re: Position from yesterday, Rxc7!!, problem for all Rybka versions. Terry McCracken 20:51:11 02/09/06
        • Re: Thanks. Mark Ryan 17:37:39 02/09/06

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