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Subject: Re: Searching PV first

Author: Daniel Clausen

Date: 15:21:26 07/19/04

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On July 19, 2004 at 18:07:53, Stuart Cracraft wrote:

>So I recently added some code to search the PV first
>but with an add-on whose effect may be a curveball
>in the longrun but appears okay at first.
>
>PV is searched first but with the add-on that any other
>position that is searched (but not on the PV) there is a check
>made for whether a PV-move at the same depth is available
>in this position and if so it is searched first.
>
>Anyway, after doing the above my test results made another (small)
>jump over just using the first move only of the prior iteration's
>principal variation.
>
>Version 2.01
>     ~Time  Solved Solved Time    Nodes     other information
>    per move  %   / Total  Tot     Tot      other information
>//   5 sec - 75% 227/300 1620.68 281651520 938838/5/173787 0/0/18410820/0/0/0
>//   1 sec - 66% 199/300 323.91   53624628 178749/1/165555 0/0/3556160/0/0/0
>
>Version 2.00
>//   5 sec - 73% 218/296 1687.07 301382976 1004610/6/178643 0 0/19507018/0/0/0
>//   1 sec - 62% 187/300 313.89 52147824 173826/1/166134 0/0/3460861/0/0
>
>Stuart

So will that become GNUchess6 in the end? :) If I may ask, do you start from
scratch again or are you using something from GNUchessX?

Sargon



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