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Subject: Re: Is this really correct?

Author: Ricardo Gibert

Date: 01:57:53 11/23/00

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On November 23, 2000 at 03:15:48, Jouni Uski wrote:

>[D]5k2/8/pppppppp/8/PPPPPPPP/8/8/5K2 w - -
>
>Tim Krabbe in chess curiosities claims, that d5! is winning. He gives
>d5 exd5
>exd5 cxd5
>a5 bxa5
>b5 axb5
>cxb5 Ke7
>b6...
>
>Is this true? For absolute truth we need 18 piece TBs, so it takes a lot time...
>
>Jouni

Yes. To help get a handle on the position, it is easier to understand the
position with the e-pawns removed. In that position, the 4 vs 4 pawn
constellation must generate a passed pawn as far on the far side of the board as
possible. The rule of thumb to accomplish that is to start the action on the
near side first, hence the move d5. The presence of the e-pawns does not
significantly affect the play. I annotated this ending in detail here at CCC
about a year ago. This position is relatively easy for a human, but hopeless for
a computer.



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