Author: Severi Salminen
Date: 09:49:15 01/26/01
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>What you say is extremely to the point. I have had similar results with Chess >Tiger. I can easily increase my NPS and beat everything else on NPS (on PC, I >mean), but my program would be significantly weaker. > >The kind of NPS increase I'm talking about is not by removing chess knowledge. I >can keep exactly the same evaluation, and by changing several things in the >search (removing pruning algorithms), I can increase my NPS dramatically. But >the program will be weaker, even if it is 5x faster in NPS. Yes. What made me worry is that when I removed SEE from my engine and played (just a couple of) games between a version with SEE there were no differences in tactical play. Could it really be that SEE slows things so much down that the benefit isn't really significant? I hope this is not the case because I spent _a lot_ time adding those xray attacks in SEE... In Qsearch I stop searching more moves in that node when eval(node)+move[i].see_score+PAWN_VALUE drops below alpha (they are sorted). Could this be even more selective? Maybe the PAWN_VALUE could be 0? Have to try... Maybe it would make things brighter for SEE. (I might remember something wrong as I don't have access to source code right now.) Severi
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