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Subject: Re: the difference between alberts and my settings

Author: Thorsten Czub

Date: 08:01:49 10/28/04

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On October 28, 2004 at 10:26:31, Albert Silver wrote:

>Check your e-mail from Ed. It's another move-ordering switch that combines well
>with [MISC_03] according to him. My first tests showed problems, not just in the
>finding of key moves, but in the main lines it was displaying while analyzing (I
> always look closely at this), so I was unconvinced. I then decided it must be
>an issue of balance and decided to make small adjustments here and there to see
>if I could find it. The 109 to 108 suddenly made a difference, so I decided to
>start a match with it.

i gave up with most of those search switches. they more or less produce blunder
when i used them, and when i knock them off, the program played normal moves.

but i can try 39 of course.


>Actually, I do believe it, but never expected quite such a big one.

this sounds still unbelievable.


>Take the Pawn Pressure switches. I've tested very high and very low with it, and
>lots in between.


yes. thats the way i test too. first bring the switch into the extremes. then
find the right balance.

but : IMO the pawn pressure switches damage the play. they push things too far.

even when using 90 for the middlegame , or 110, it is IMO too much.

you will see PD push the pawns like hell.

also i have the feeling that middlegame is not enough STAGE.
i would like to see middlegame differenciated in 3 stages.
opening, early middlegame, middlegame, late middlegame, early endgame...




>At more than 170 for the middlegame, the engine goes manic
>about hitting pawn weaknesses. So much that it neglects other important things.
>At 160 or less, it doesn't of course, but I find that it doesn't do enough. My
>completely subjective opinion is that the ideal value for it is 165. However,
>not for the endgame. Here I found that even values of 150 had a detrimental
>effect on its play. So I've set it at 140. I mostly found this when trying to
>make a special endgame setting. I can't prove anything, it is just based on my
>observation.

yes.



we will see how it ends.




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