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Subject: Re: Whither Null Move?

Author: Georg v. Zimmermann

Date: 22:03:30 08/19/01

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>>
>>From this +/- oscillation of the score, I guess that you do not give a big
>>enough bonus for being on the move. This what kills your null move. Just add a
>>bonus for the player on the move so that the evaluation oscillates as little as
>>possible. Null move should work much better then.
>>
>>Rémi
>
>Interesting that you use a bonus.
>Anyway in this particular position, my guess (just my guess) would be that if
>r=3 is used, a bonus would be no good for nullmove, as nullmoving steal an
>important tempo for the side to move.

nullscore = -search(-beta, -beta+1, depth-3, 1);

=> he is using R=2

Georg



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