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Subject: Trustability of PVs

Author: Harald Faber

Date: 05:39:01 12/23/04

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On December 22, 2004 at 13:24:44, Heiner Marxen wrote:

>On December 22, 2004 at 02:20:25, Christian Goralski wrote:
>
>>1.Sxg5 hxg5 2.Lxg5 Sxb3 3.h4 Lc5 4.Le3 Sxd4 5.Lxd4 Lxd4 6.Kxd4 Ke8 7.g5 Kf8 8.g6
>>fxg6 9.Kc5 b3 10.Kb5 d4 11.h5 gxh5 12.f7 Kxf7 13.Kc6 b2 14.Kc7 b1D 15.Kc8
>>  +-  (2.08)   Tiefe: 38/76   07:32:02  19744034kN, tb=590357
>>
>>(Goralski, Bochum 22.12.2004)
>
>The PV is somehow garbled.  Following the last PV we reach
>[D] 2K5/p4k2/P3p3/4P2p/3p4/8/8/1q6 b - -
>which is completely lost for white.
>
>Cheers,
>Heiner


This is a well-known behaviour. I already pointed this out after the Thueringen
2004 tournament in which I have seen more strange lines than the one above. PVs
in which Shredder throws away the queen and a piece in the third and fourth
move.

So no need to worry but do not trust the PV.




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