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Subject: Re: About qsearch...

Author: Severi Salminen

Date: 00:56:36 12/30/01

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>Here are the results of my program when searching depth 7 from the initial
>position:
>limit of qsearch in plies is the first number in every line   and  nodes for
>depth 7 is the second number:

>I think that limiting the qsearch too much may do chess program slower in
>getting the same depth thanks to bad order of moves

(Limiting) qsearch should not have anything to do with move ordering. Ordering
is usually statical and takes place in every node, or then you are doing
something very interesting.

>0   2868842
>1   3611982
>2   997968
>3   1564826
>4   1196247
>5   1214999
>6   1184129
>7   1153555
>8   1180282
>9   1153618
>=10  1153584

I don't quite understand the numbers (they include _all_ the nodes, right?)
above. 0 means actually a 7 ply search with no qsearch at all? 1 means 7 plies
of full width and 1 ply qsearch? How can 2 ply limit have only 997968 nodes?
Shouldn't the number increase when increasing the limit? I'm missing now
something important...

Severi



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