Author: Renze Steenhuisen
Date: 07:03:36 04/01/04
Go up one level in this thread
On April 01, 2004 at 09:43:34, Renze Steenhuisen wrote:
>>The main thing which will drive up your first cut rate is internal iterative
>>deepening. (If you have it implemented and are getting 60-80%, then you have a
>>bug.)
>
>Can anyone give me typical numbers on this point?
>
>Thanks!
Putting Internal Iterative Deepening in as follows, doesn't give me any better
FH-% numbers. What does happen, strangely enough, is that finding a Fail-High on
a move is postponed one ply. THIS SEEMS WEIRD TO ME?
/**** IID ****/
if( tt_move==NO_MOVE && remain_depth>PRE_PRE_FRONTIER && try_null_move==TRUE )
{
value = pvs_search(tree, alpha, beta, remain_depth-2, DO_NULLMOVE);
if( value<=alpha)
value = pvs_search(tree, -MATE, alpha+1, remain_depth-2, DO_NULLMOVE);
lookup_tt_entry(tree, depth, &tt_value, &tt_move);
}
Cheers!
Renze
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