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Subject: Re: Funny Cook, Mate in 11

Author: Miguel A. Ballicora

Date: 06:48:58 10/14/01

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On October 14, 2001 at 00:49:39, Uri Blass wrote:

>On October 13, 2001 at 23:48:51, Miguel A. Ballicora wrote:
>
>>This is WCSAC 738:
>>[D]r1b2r2/3pNpkp/3pn1p1/2pN3P/2PnP3/q3QP2/4BKP1/1R5R w - - bm Qh6+;
>>
>>Der Bringer with "two best options" in analyzing mode finds
>>after 10 plies that Qh6+ is Mate in 11. Funny is that the uninteresting
>>move Qd2 is also mate in 11!! Unbelievable what computers can find.
>>Another cook and another position from WCSAC eliminated.
>>
>>Regards,
>>Miguel
>
>1)I disagree that Qd2 is uninteresting.
>It is the move that most humans are going to play but for some reason there are
>humans who look for a sacrifice and not for the best move.
>
>It is the most natural move to play because there is no reason to sacrifice the
>queen when there is a mate attack without sacrificing the queen.

Well, now this conversation is moot because Peter reported that it is
a bug in Der Bringer (Thanks Peter!). Anyway, I meant uninteresting
for a tactical/combinatorial test. I do not think it is a good idea
to include a test where the key move is just a "natural" simple move
that most of the engines will pick up even if they do not see what's
going on. I would not be testing "combinatorial vision" in that case.
I am going to include this position again...

Regards,
Miguel




>
>Thinking about sacrifices make sense only if you find no win without them.
>
>2)Chest says that there is no mate in 8.
>
>Uri



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