Author: José Carlos
Date: 15:15:55 12/26/03
Go up one level in this thread
On December 26, 2003 at 16:09:32, Uri Blass wrote:
>On December 26, 2003 at 15:59:29, Tony Werten wrote:
>
>>On December 25, 2003 at 06:29:31, rasjid chan wrote:
>>
>>Ed has a different structure in his search.
>>
>>Most people have:
>>search
>>{
>> evaluate
>> for all moves do
>> make move
>> call search
>> unmake move
>> next
>>}
>>
>>Ed uses:
>>search
>>{
>> for all moves do
>> make move
>> evaluate
>> call search
>> unmake move
>> next
>>}
>>
>>The different location of evaluate causes all the differences like <=alpha
>>instead of >=beta etc
>>
>>Tony
>
>I do not understand.
>
>How the fact that I evaluate at a different place make the difference?
>
>Note that I also evaluate every node but I do not see how it changes alpha and
>beta.
>
>Uri
Because if you evaluate after making the move, your looking at the position
from the other side (for the opponent), so now "your" alpha is the opponent's
"beta" and vicecersa.
José C.
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