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Subject: Re: Trojan Horse Detection Code in Shredder 6

Author: Robert Hyatt

Date: 08:53:53 10/29/05

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On October 29, 2005 at 03:24:11, Kurt Utzinger wrote:

>On October 29, 2005 at 03:13:24, Will Singleton wrote:
>
>>On October 29, 2005 at 01:24:26, Oliver Roese wrote:
>>
>>>Hello,
>>>
>>>this position down the page originates from a very famous game from Alekhine,
>>>which he won after (temporarily) sacrificing a queen and a rook.
>>>
>>>In this position black can simply win by capturing the knight. I was very
>>>surprised, that Shredder 6 refuses to do so.
>>>Apparently a "Trojan Horse"-trap is assumed...
>>>
>>
>>Try Crafty 20.0 on it, does the same as Shredder.
>>
>>:)
>
>
>      Hi Will
>      Crafty 19.13 does better.
>      Regards
>      Kurt
>
>
>New game - Fritz 9, 180'/40
>r4r1k/1ppbn1p1/3p1n1p/p2P1pNq/2P1pP1P/PPQ1P1P1/6B1/R2R1NK1 b - - 0 1
>
>Analysis by Crafty 19.13:
>
>1...hxg5 2.hxg5 Ng4 3.b4 b6 4.Qd4 Rfe8 5.b5 Kh7 6.a4 Ng6 7.Rac1 Rh8 8.Rc3 Rad8
>  -+  (-2.97)   Depth: 1/15   00:00:00
>  -+  (-3.22)   Depth: 15/36   00:04:40  158273kN
>
>(Utzinger,  29.10.2005)

In much older versions, the trojan check has to be turned on in the chessbase
gui.  Newer versions make that decision automatically and don't give the GUI any
control over it at all.




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