Author: José Carlos
Date: 02:11:44 04/07/04
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On April 07, 2004 at 04:23:12, Tord Romstad wrote: >On April 07, 2004 at 04:17:43, José Carlos wrote: > >>On April 07, 2004 at 04:06:38, Tord Romstad wrote: >> >>>The following idea is still untested, but unless I am missing something it >>>is guaranteed to reduce the number of nodes without any risk. The idea is >>>fairly obvious, and I am sure some of you are already using it, but I still >>>don't think it is widely known. >>> >>>At a node where the remaining depth is sufficiently big that a null move >>>would not drop us directly into the qsearch, and beta > DRAW_SCORE, avoid >>>doing a null move search if the move leading to the node was a reversible >>>move. The point is that we know that the null move search is a waste of >>>time in this case. After the null move, the opponent can just reverse >>>his move, with a repetition draw score. >>> >>>Tord >> >> Maybe I don't understand you correctly, but I think side-to-move changes so no >>repetition occurs. White to move, I play Ng1f3, you null-move, I play Nf3g1, but >>now it's black to move. > >Yes, yes, you're right. I was stupid, as usual. :-( > >Tord You share your ideas, and that's great. Keep doing so please. Even if you make a mistake, you: -get feedback and avoid useless developing+testing -give something interesting to think about Congratulations on your success with Gothmog. Really impressive how your "stupid" ideas are working on your program. I wish I was so "stupid" as you. José C.
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