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Subject: Re: Nimzo Paderborn (German)

Author: Eugene Nalimov

Date: 10:31:37 07/09/99

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On July 09, 1999 at 06:14:17, Ernst A. Heinz wrote:

>On July 08, 1999 at 13:14:55, Christian Goralski wrote:
>
>> Nimzo-Paderborn
>>
>>Verbesserungen gegenueber Nimzo99
>>
>> [...]
>>
>>b) Eigene komprimierte Endspiel-Datenbank, auf die auch in der Ruhesuche
>>zugegriffen wird. Dadurch werden Abtaeusche in gewonnene Endspiele sehr
>>schnell gefunden bzw. Abtaeusche in verlorene vermieden
>
>Just for the record and information of interested chess programmers:
>
>The new endgame databases of "Nimzo-Paderborn" are based on the
>knowledgeable encoding technique as introduced by "DarkThought" and
>decribed in my article "Knowledgeable Encoding and Querying of Endgame
>Databases" in the ICCA Journal 22(2), pp. 81-97.
>
>Chrilly Donninger further advanced my published scheme in "Nimzo".

I was under the impression that he uses standard Win/Draw/Loss tables, as used
by (for example) Chinook in checkers and Deep Blue in chess.

Eugene


>>c) Zusaetzlich (zum Nullmove) neue selektive Suchtechnik (Details sind aber
>>Top-Secret).
>
>In Paderborn, Chrilly openly admitted to employ multi-cut pruning.
>Maybe this is the "top secret" method ...
>
>The bibliographic refernces for multi-cut pruning follow below.
>
>Bj"ornsson, Y. and Marsland, T.A. (1999).
>Multi-cut pruning in alpha-beta search.
>1st International Conference on Computers and Games,
>Proceedings, H.J. van den Herik and H. Iida (eds.),
>pp. 15--24, LNCS 1558, Springer, ISBN 3-540-65766-5.
>
>Bj"ornsson, Y. and Marsland, T.A. (1998).
>Risk management in game-tree pruning.
>Technical Report TR 98-07, Department of Computing Science,
>University of Alberta.
>
>=Ernst=



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