Author: Peter Kappler
Date: 15:13:30 07/19/00
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On July 19, 2000 at 17:56:44, Larry Griffiths wrote: >Hi, > >I have been re-programming my chess engine lately and have been implementing a >concept that I saw posted here about a year ago. > >The concept is to look out from the FROM and TO squares when a piece is moved to >determine what pieces need to have their moves re-generated. > >I am having second thoughts about this since it is about equal to >generating moves for 2 Queens, 2 Kings, 2 Knights and 2 Pawns looking out >from the FROM and TO squares. > >Is anybody using something like this, or even tried this? > >Larry A couple of months ago, I seriously considered scrapping my move generator and using an incremental scheme, like the one you described. I spent a couple of nights thinking about the design, and then decided it was too much work. :) The big advantage I see is that you automatically get up-to-date attack information, which is extremely valuable in an eval function. I asked Bob about this a long time ago, and he said he started down this path with Crafty before switching to bitboards. I also think KnightCap does incremental move generation, and the source code is available. --Peter
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