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Subject: Re: Why Tiger calls it Mate in 25?

Author: Jeff Lischer

Date: 18:42:26 04/20/01

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On April 20, 2001 at 08:19:32, Dieter Buerssner wrote:

>On April 20, 2001 at 07:00:07, Jeff Lischer wrote:
>
>>I just received the 9 CD 3, 4, and 5 men bases from Chess Assistant. When I
>>installed them, they took up 6.06 GB (and 236 files). Any idea where the
>>difference comes from?
>
>I guess, you are missing the 4 vs. 1 TBs like KQQQK. I think, they will be of
>extremely limited use. Some programs will probe 4 vs. 1 TBs, others won't. If I
>count correctly from Eugene Nalimov's source, there are 292 TBs for the whole
>set of 2-men (KK ...), 3, 4 and 5-men TBs. Without the 4+1 TBs there are 222.
>
>Some TBs are symmetrical, like KNKN, and the newest code of Eugene looks like it
>only needs only the nbw and not the nbb.
>
>Regards,
>Dieter

Thanks for your answer. I checked the files I have versus what's on Bob's ftp
site and you are correct -- most of the TBs I am missing are KxxxK. In fact the
4 vs 1 that I am missing are the KQxxK and KRxxK TBs, so I think you are right
that they are of limited use.

However, there is one glaring exception: I am also missing the KBBKR TBs. Isn't
that a critical one that should be included or am I missing something?!?



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