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Subject: Re: Fritz 6 Endgame Weirdness

Author: Len Eisner

Date: 14:53:06 12/20/99

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On December 20, 1999 at 16:52:07, Torstein Hall wrote:

>On December 19, 1999 at 20:10:59, Len Eisner wrote:
>
>>In the following endgame position, Fritz 6 plays f7??  I know this is the
>>tablebase at work but it seems strange to me.  And after …a2, Fritz 6 plays
>>Kg2?? which also look weird.  Then after Black queens the pawn with a1-Q, Fritz
>>6 goes out of the table base and plays f8=q which is only good for a draw
>>according the Thompson database on the Fritz 5 CD. If I had the Nalimov QPvsQ
>>tablebase, Fritz 6 would have played g8=q and won.  But that table base does not
>>come with the program.
>>
>>I created this position to test the table base.  It did not arise in an actual
>>game.
>>
>>wKg1,Pf6,g7/bKb5,Pa3
>>
>>Len
>
>Strange, My F6 plays g8Q, says that its check mate in 7 and do not hit the
>tablebase at all. Are you sure you not are playing in sparring mode, friend mode
>or other weak mode?
>
>Torstein

My Fritz 6 plays f7 in analysis mode and announces mate in 13!  If I set it for
the long game level 40/40 it moves immediately and announces mate in 25!

I have the tablebases from Hiarcs 7.32 loaded on my hard drive.  I'm not
actually using the ones that came on the F6 CD.  I wonder if that could account
for the difference.

Len



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