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Subject: Re: Multi Paderborn (German)

Author: Andrew Dados

Date: 17:44:36 07/09/99

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On July 09, 1999 at 17:58:03, Peter McKenzie wrote:

>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".
>>
>>>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.
>
>Perhaps someone could post a brief overview of what Multi-cut pruning is?
>I've never heard of it before...

  There is a nice paper by M.Buro concerning M-ProbCut pruning (however applied
to Othello). You may get it online at
http://www.neci.nj.nec.com/homepages/mic/ps/improve.ps.gz
I get a feeling null move concept is not far from multi-cut...
 -Andrew-

>
>>
>>=Ernst=



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