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Subject: Re: Rybka - Unconfirmed Analysis Bug

Author: Steve Lim

Date: 09:41:58 12/05/05

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On December 05, 2005 at 11:56:05, Uri Blass wrote:

>On December 05, 2005 at 11:45:19, Steve Lim wrote:
>
>>Hi All,
>>
>>I have just started testing the new engine. I can't quite put my finger on it
>>right now. However I am quite sure that there is a bug when using infinite
>>analysis under the chessbase GUI.
>>
>>When compared to playing a game/match, the infinite analysis mode seems to give
>>unreliable / weak pvs.
>>
>>Please check if you have the same findings.
>>
>>In match mode, it seems to be a very interesting engine.
>>
>>Steve.
>
>please post an example(I do not see it but I did not analyze many positions with
>it)
>
>Uri

[D]r1b1kn1r/2q2pb1/p1p3p1/2P1p2n/Pp2P2p/2N1BP2/1P1QBNPP/R4RK1 w kq - 0 17

From Thomas' example posted below...

Its hard to explain.. seems the hash is inconsistent.
 Try the above mentioned position a few times with cleared hash on infinite
analysis vs game in 2/hours time control forcing Rybka to move...

I find the 2 are very different.







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