Author: Uri Blass
Date: 01:48:15 11/21/02
Go up one level in this thread
On November 20, 2002 at 19:02:49, Gian-Carlo Pascutto wrote:
>On November 20, 2002 at 18:54:30, Omid David Tabibi wrote:
>
>>>Could you please compare (Adptv + small quiesc) vs (Vrfd +small quiesc) ?
>
>When I have more time.
>
>If you want more data, I expect others will post results
>from their programs as well. Maybe those are more encouraging...
I will post after I implement the code.
I have a problem because I am not sure how to implement the code in movei:
Movei does not use null move pruning when the remaining depth is 1.
I have special pruning rules for that case
The pseudo code of movei is:
int alphabeta(int depth, int alpha, int beta)
{
1.depth=depth+extensions
2.if (depth<=0) return quiescence()
3.if pruning rules happen return beta(pruning rules happen mainly when depth=1)
4.if repetition return 0
5.if null move conditions(null move conditions include depth>=2)
{
donull move;
val=-alphabeta(depth-4,-beta,-beta+1);
if (val>=beta)
return val;
}
...standard alphabeta
}
When I try depth>=1 instead of depth>=2 I find that it probably does not help
me(maybe because of my pruning that happen often when depth=1).
Uri
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