Author: Robert Hyatt
Date: 16:55:06 11/28/02
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On November 28, 2002 at 01:29:10, Leen Ammeraal wrote: >On November 27, 2002 at 23:38:39, Robert Hyatt wrote: > >>On November 27, 2002 at 19:03:38, José Carlos wrote: >> >>> I've been writing a new program in the last few weeks (at about 4-5 hours a >>>week). I wanted to experience with bitboards (non rotated) and MTD(f). >>> After writing the search structure (data representation, make-unmake, hashing, >>>etc...) I've started to add some eval. >>> I must say I'm really _amazed_ by how many things I can do with bitboards with >>>so little effort. Attacked squares patterns, board control, mobility... all >>>dynamics stuff is really easy to write (not tried statics yet). >>> The program is still far from playing a whole game, and I'm not gonna have any >>>spare time in the next few months, but I expect it to outplay Averno completely >>>(though I'm having a horrible branching factor with MTD). >>> And the best is, when you get into bitbords world, ideas come to mind faster >>>than you can write them down! >>> I still know almost nothing about bitboards, but I'm already impressed. >>> >>> Just my humble experience. >>> >>> José C. >> >> >>Most people that try them, eventually end up liking them. >> >>Others never try them and try to convince the rest that they can't work, >>they are too slow, you can't do sophisticated stuff with them, etc. >> >I belong to the first category (except for the term >'eventually': I liked them right from the start). >I was very lucky some years >ago to saw by chance a copy of the ICCA Journal in which >you explained Rotated BitBoards (December 1999). But for >that article, I am not sure I would ever have come to >grips with bitboards to use them in Queen. >Thank you very much. >Leen I got interested the same way. But Northwestern's Chess 4.x was my inspiration. :)
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