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Subject: Re: Fritz 6 tablebases ?

Author: blass uri

Date: 03:22:38 02/06/00

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On February 06, 2000 at 03:30:52, Jeremiah Penery wrote:

>On February 06, 2000 at 02:44:59, Dave Gomboc wrote:
>
>>On February 06, 2000 at 02:33:35, Pete R. wrote:
>>
>>>On February 06, 2000 at 01:41:01, Eugene Nalimov wrote:
>>>
>>>>So it looks that for now practical limit is 6-man TBs, if you can spend tens of
>>>>gigabytes (hundreds, when we'll have more) for them.
>>>
>>>Are you creating 6-man TBs with pawns, e.g. KRPKRP?
>>
>>At this point, I highly doubt it.  Those would require all of the promoted cases
>>to be used.
>>
>>I thought that FIDE's rules allowed a TD to specify an optional extension to the
>>fifty-move rule, but since this is apparently no longer the case (the rule has
>>been revised again to exclude this possibility), Eugene might want to give some
>>thought to restandardizing on distance to conversion.
>
>Distance to mate should work (at least exactly as DTC does...), as long as the
>generator has knowledge of the 50-move rule.  It may be really hard to do this,
>but, for example, you could take a few moves longer to reach mate because of an
>un-optimal pawn push/capture, but it would save you from a draw. (And that's
>probably a really bad sentence.)

I do not see a simple way to calculate distance to mate if you consider the 50
move rule.

Can you explain your idea how to do it?

Uri



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