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Subject: Shredder 7 didnt find it at depth 17/50

Author: Drexel,Michael

Date: 12:53:44 01/02/03

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On January 02, 2003 at 14:34:13, Dieter Buerssner wrote:

>On January 02, 2003 at 14:03:42, Manfred Rosenboom wrote:
>
>>Yace needs a while, but from depth 11 on it finds the move.
>>Also in depth 13 Yace announce a mate in 16. This announcement may be wrong, but
>>at least there must be a mate.
>
>Manfred, I think with most chess engines (not mate solvers) mate announcements
>must be interpreted as: It is at least a mate that long, it may be faster. In
>this sense, announcing mate in 16 is not wrong. BTW. Here my current version
>announces mate in 15. But this can also be pure luck, and with a different hash
>table size, it might first find mate in 16, too.
>
>IIRC, the position was discussed here not too long ago.
>
>Regards,
>Dieter

Hello Dieter,

Shredder 7 is not able to find the mate at depth 17/50 1026360kN
PV: -+(-3.12) 1.h5 Kh8 2.hxg6 Sg5 3.Le3 Tgf8 4.Ta7 Dxa7 5.Sxc6 Da8 6.Sxb8 Dxb8
7.Lf4 Da7
at this depth shredder 7 evaluates 1.h5 (1/44) for minutes and 1.Qxg6+ (3/44)
for roughly two seconds.
at which depth do you think it would find the mate? 30/30?
this 'behaviour' has obviously something to do with its superior playing
strength.



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