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Subject: Re: What's wrong? Fritz or TB's?!

Author: Aaron Tay

Date: 23:36:20 03/21/01

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On March 21, 2001 at 16:21:59, Peter Berger wrote:

>On March 21, 2001 at 15:58:38, Slater Wold wrote:
>>Now.  Something has gone wrong, either with Fritz reading the TB's, or the TB's themselves.  Had Fritz just simply advanced the pawn, promoting it, then it was a simple win most 1500 player could handle.  But for some reason, it wanted to chase the king around!  The first thing I did, was do a scandisk and check for any corrupted TB files.  There are none.  Then I compared my 5 piece TB size to Hyatts on his server.  They are both the same.  So I would venture to say, either Fritz had a problem reading it, or the KRPKR file is corrupt.  (However I think Hyatt would have caught it by now.)  I have had several positions, where I look @ the board, and say, "I COULD MATE THIS!"  and Fritz draws.  WHY?  I was just curious if anyone else had the problem, and if anyone knew what the problem was.
>>
>>Thanks,
>>Slate
>>
>>Also, if you look from #43 to #17 (the second one) the depth is always 1.
>>However, then it starts seeing depth 5!  With TB's (usually) it documents 1 ply
>>only!!
>
>This definitely would be a good one for a CCC FAQ .

I agree. Probably next to how do I setup tablebases downloaded from the net to
work with Fritz.

I already have the incomplete TB set problem in my WINBOARD FAQ already, as you
probably know..

But I don't know if it will remain a problem for long because it seems to me
that more and more Winboard [I think the Winboard Edition II engines are immune
to this bug also]  and probably other chess engines can now avoid this problem..

There are still the Fritz users of course.

Aaron

> This happens if you have
>KRPKR on your harddisk ( which comes with the Fritz CD ) but not the subsets
>KRQKR , KRBKR et al .
>
>The problem is program knows KRPKR with the pawn on b7 is mate in 17 or so ; it
>also knows promoting the pawn it will be worse than that ( as it can't find this
>in a TB anymore ) . So this can be healed if you download the missing ones ( if
>you have enough space on your harddisk ) .



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