Author: Ulrich Tuerke
Date: 03:41:23 01/31/04
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On January 30, 2004 at 18:24:25, Andreas Herrmann wrote: >On January 30, 2004 at 16:59:43, Ulrich Tuerke wrote: > >>On January 30, 2004 at 13:22:45, Andreas Herrmann wrote: >> >>>On January 30, 2004 at 12:55:45, Ulrich Tuerke wrote: >>> >>>>Andreas, are you also checking for repetitions when you are in quiescence search >>>>? >>>> >>>>Uli >>> >>>Hi Uli, >>> >>>no i don't, because i search only capture and promotion moves inside the qsearch >>>and there can't be a repetition. Perhaps i will try to generate also check moves >>>in quiescence search in the future. Have never tryd it sofar. >> >>I think that you are right: in case you have captures and promotions only, no >>repetition can happen. Comet also generates some checks in quies search. >> >>In fact, I try a little trick: in case the same piece gives 3 checks in series >>without a capture in this line, I cut the line after the 3rd check and return a >>zero score, provided this series is not too close to the root - and also >>depending on the iteration number. The required distance to the root grows with >>the iteration number. This helps in some rare cases to detect a perpetual one >>ply earlier. But one has to be very careful with this because it implies a >>certain risk. >> >>Uli >>> >>>Andreas > > >Hi Uli, > >it seems you are doing something similar, than i have tryd in the past. Ok i >have not looked if it was the same checking piece. >After the IPCCC i will see, if i can find a solution in my engine. >Thanks for sharing your idea. Sure enough. It's not really wortwhile. In Paderborn, you may ask Roland. IIRC, he has something better. Uli > >see you in 2 weeks >Andreas
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