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Subject: Re: Mistake 2 knights, not 2 bishops

Author: phili_ppe

Date: 16:35:32 01/27/06

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On January 27, 2006 at 18:50:40, M Hurd wrote:

>On January 27, 2006 at 18:43:03, phili_ppe wrote:
>
>>On January 27, 2006 at 18:39:59, phili_ppe wrote:
>>
>>>On January 27, 2006 at 17:37:54, M Hurd wrote:
>>>
>>>>On January 27, 2006 at 16:14:57, phili_ppe wrote:
>>>>
>>>>>Hello,
>>>>>I run Rybkabeta13 under ChessPartner 5.3. In the "engines properties" I specify
>>>>>where all my 3-4-5 egtb are located : C:\TB. However it does not find them, all
>>>>>the other engines with CP5 can use the EGTB. This is another bug of rybka.
>>>>
>>>>
>>>>Hello phili_ppe
>>>>
>>>>Can you give us an example ?
>>>>
>>>Here's one from Pachmann Endspielpraxis im Schach
>>>2 KNIGHTS vs 1 pawn, mate in 8
>>>Note that I use Game -> players -> white & black=computer
>>>
>>>[D]8/1N6/k7/2K3p1/6N1/8/8/8 w - -
>
>
>Hello again
>
>I only have 4 piece endgame tables and use the chessbase gui however Rybka finds
>the mate from your position in 3 seconds but shows it as a score of 319.85
>(awaiting version 1.2 to show mate in x) Rybka does not show it is accessing the
>table bases but will in the next update.
>
>What does the chess partner interface show in this position ?
>
>regards
>
>mike

I found what's wrong. I simply downloaded again Rybka beta 13 and Vasik fixed
this bug during the night. Now CP5 mates in 9 moves. It shows  Conversion in
-116. According to Pachmann the first move is 1.Kc6 then 8.Nb6#. Rybka finds
1.Nd6 then 9.Nb6#.
 Rybka beta13 under FRitz8 finds the mate in 8 like Pachmann says and displays
it properly .
 My conclusion is that Rybka has still a little bug withe EGTB under CP5.


Thank you for your interest.



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