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Subject: Re: More ECM Inconsistencies (#001 - #099)

Author: Howard Exner

Date: 07:17:30 01/22/98

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On January 22, 1998 at 06:54:01, Amir Ban wrote:

>On January 22, 1998 at 05:04:43, Howard Exner wrote:
>
>>On January 21, 1998 at 14:24:23, Ernst A. Heinz wrote:
>>
>
>>ECM16 Sokol'skij vs Botvinnik (may be a variation as not all ECM
>>examples
>>were actual game moves)
>>1... Rxc5 2.Bxc5 Nf3 3.gxf3 Bxf3 4.Qc2 Bxd1 5.Qxd1 Qg5 -+
>>This is what the book says but you can clearly see the entire line
>>is flawed. Nf3? Qc2?
>>
>
>Right. 3... Bxf3? 4. Be7 makes black feel really stupid. So there's no
>combination here.
>
>
>>ECM99: Miranovic vs Gorev
>>1.Qxd5! Rxd5 2.Nf6 Kh8 3.Bg5! Kg7 4.Rh7 Kf8 5.Rh8 Ke7 6.Nd5 +-
>>Again your programs will expose the flaws in this one also.
>>
>
>Here I disagree. 1... Rxd5 is suicide, but that only proves that the key
>is correct. It does take a piece, no ?


It looks like the tail end of a routine piece exchange on d5. I'm not so
sure if would have met the requirements of a decisive combination had
they
discovered Be5 in reply to Qxd5.

 If the defender has to decline a
sacrifice then it's correct.

The previous moves would need to have been included to determine if it
was a sacrifice or just a routine piece exchange. I would drop this one.
>
>Amir



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