Author: Uri Blass
Date: 06:48:13 11/08/02
Go up one level in this thread
On November 08, 2002 at 08:50:46, Gerd Isenberg wrote:
>On November 08, 2002 at 07:01:15, Grzegorz Sidorowicz wrote:
>
>>What do you think about formula?
>>
>>if (!(alpha>(CHECKMATE-QVALUE)))
>>{
>> do_not_extent=true;
>>}
>>
>>Currently I'm testing this formula for all extensions
>>and for example I have got 5 solutions more in WAC test...
>>but now my program can't solve some other positions
>>(for example CMB-10 from LCTII test)
>>
>>Grzegorz
>
>Hi Grzegorz,
>
>I suppose you want to disable extensions, if alpha is already a winning score.
>Is the not operator correct, or what is your intention?
>
>Gerd
I do not understand this idea.
If alpha is already a winning score then it means that beta is also winning
score so the game is over.
The only case when it may be relevant is if you search not in a normal way(for
example search for exact score of the second best move)
It is one of the ideas that I consider to try in the future(but of course I need
to do it to reduced depth in order not to waste too much time about it).
Wasting a small amount time can be useful to get knowledge(for example you can
see if there is a forced move and play it faster if you have an exact score of
the second best move)
Uri
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