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Subject: Re: Negamax with alpha/beta and scoring.

Author: Larry Griffiths

Date: 06:31:23 09/10/00

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On September 10, 2000 at 09:25:13, Carlos del Cacho wrote:

>On September 10, 2000 at 09:10:28, Larry Griffiths wrote:
>
>>I tried to implement Negamax with cutoffs again yesterday and failed.
>>
>
>Then try again... :)
>
>>My approach was to take my old alpha beta code and converted it to
>>negamax/cutoffs.
>>
>>I am of the opinion that my scoring function should calculate the highest
>>possible positive value for Black Or White instead of the most negative value
>>for Black and the most positive value for White.
>>
>
>That's right. In Negamax both players intend to get positive scores so when you
>evaluate a position you do it from the perspective of side to move.
>
>>Is my statement about scoring with Negamax/cutoffs true or am I still missing
>>something.
>>
>>Larry.
>
>Good luck
>Carlos

Thanks Carlos,

I restored my old code back to alpha/beta, so I will have to back it up again
and do the changes all over again.  It should not take as long to implement this
time. :)

Larry.



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