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Subject: Re: Show this position to your engine

Author: Alastair Scott

Date: 12:41:30 08/22/03

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On August 22, 2003 at 15:34:15, Christophe Theron wrote:

>On August 22, 2003 at 10:17:13, Mihaly Szalai wrote:
>
>>[D]8/3p1P2/3Pp3/2p1P2K/p1p3P1/PpP3p1/1P3pP1/6k1 w - - 0 1
>>
>>White wins, but...
>
>
>
>I must be very tired, but I don't understand.
>
>Seems that the solution is 1.f8=R instead of 1.f8=Q
>
>But what is the difference between
>  1.f8=R f1=Q 2.Rxf1 Kxf1
>and
>  1.f8=Q f1=Q 2.Qxf1 Kxf1  ???

The point being that, after f8Q, Black plays ... Kh2!! and might even win after
... f1Q if White doesn't give stalemate by playing Qxf1.

Whereas, after f8R, ... Kh2 doesn't work because there is no stalemate.

Alastair



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