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Subject: Re: Then FIDE sucks

Author: Dieter Buerssner

Date: 14:42:19 05/30/02

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On May 30, 2002 at 11:00:23, Miguel A. Ballicora wrote:

>The ones that are out of real life are the tablebases (mate oriented) that just
>ignore the The Rules of Chess. Note that the Thompson EGTBs do not have this
>flaw.

I wonder, whether this is true in general. Assume a 6-men TB (Thompson has
generated many, one can look them up). Now you have the DTC, and you can judge
this in the program. But say, the conversion is to some long mate in 5-men TBs
(say KBBKN), that is a forced mate, but not in 50 moves without capture. Will
the Thompson TBs show a draw score in the 6-men TB then? 6-men TBs I checked
online, show happily very long distances to conversion.

Such a scenario may also be possible in 5-men TBs only (but I am not sure, if
such cases exist). Assume KPPKP, and after few moves 2 pawns promote to KQPKQ.

Of course, it should be possible, to solve this problem with DTC tables, but I
don't know, if Thompson tables take this into account, when the long line
without the capture/pawn move is after the first conversion.

Regards,
Dieter




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