Author: Tord Romstad
Date: 09:29:31 01/15/04
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On January 15, 2004 at 10:50:53, Anthony Cozzie wrote: >On January 15, 2004 at 07:48:42, Matthias Gemuh wrote: > >>BTW, in QSearch I also generate moves for >> >>1) all passed pawns >>2) all attacked pieces moving to unattacked empty squares >> >>/Matthias. > >OK, this seems very strange to me. > >If your eval is < alpha, how is moving an attacked piece going to increase it? > >The only way this makes sense is to never stand pat in q search. Tord's idea >_sort of_ makes sense (I have seen similar horizon problems in Zappa) I'm not sure it would be a good idea in Zappa, really. I think such techniques are mainly useful in slow engines like BigLion and Gothmog. In my own testing, I have noticed that it seems to be most effective at extremely fast time controls (I often test at 15 seconds/game). Tord
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