Author: José Carlos
Date: 10:27:27 02/22/00
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On February 22, 2000 at 07:18:09, Inmann Werner wrote: >On February 21, 2000 at 11:53:13, José Carlos wrote: > >> I don't know how most people do this, but I load the opening book into the >>hash table. That way, when the program is out of book it still can try to reach >>known positions, and searchs much faster. >> What I'm not sure is about the evaluation I should assess to those positions. >>Right now I use a zero eval, but probably it could be interesting to assess a >>small avantage to the program in those positions, cause they are good enough to >>be played without thinking if they can be reached in one move. >> Anyway, the value could not be very high, to avoid the program to miss a more >>favourable continuation after a mistake of the opponent. >> >> Have any of you experienced with this idea?. What do you think about it? >> >> José C. > >I do not store opening book in RAM. I always look at the harddisk. I do this >only once at the beginning of the search and only, if one of the last three trys >gave a hit. Otherwise a set a flag "out of book" >If I find an interesting book move, i play it. >Better would be a small (4 ply?) search, to get a move for pondering, and then >play the opening book move and change to ponder. Or, even better, play the book move and, after that, perform the shallow search and start pondering. >I do not like the idea, to stuff the opening book into the hashtable. Hashtable >place is to much worth for me, and book moves have no "real" score. It would mix >up a lot. Open book moves have no eval in my prog (only a value for searching an >interesting opening move, and a flag (! !! ? ?? =) > >Werner My idea is that _apart_ from the usual way of handling the opening book, store the book moves in the hash table. My english is not very good and I'm not sure if I explained it correctly. :) Thanks anyway for your valuable opinion. José C.
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