Author: Don Dailey
Date: 11:46:58 05/11/98
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On May 11, 1998 at 10:38:32, Roland Pfister wrote: > >On May 10, 1998 at 23:54:16, Stuart Cracraft wrote: > >> >>On May 10, 1998 at 22:58:55, Robert Hyatt wrote: >> >>>However, without a book, most anything can happen, given the right >>>time control and opponent. But, in general, it shouldn't play like >>>that... and it certainly knows that those queen moves are all bad... >> >>I am curious how most people are preventing the queen from moving >>out? Rewarding it to stay on its original square or penalizing it if >>found on other than its original square? How about penalizing it >>an amount that is linearly increased by the number of moves its >>made so far when other pieces still remain to be developed? >> >>What is the best way to prevent her royal highness from wandering? >> >>(I use the last method but sometimes end up with very high penalties >>on the queen after a series of moves that won some material or induced >>a very bad positional problem for the computer's opponent.) >> >>--Stuart > >I got 2 tips from fellow programmers at CC events: > >1. penalize the queen if it is on file a, b, g or h during development. > I use that. > >2. penalize queen for distance to its minor pieces (bishops and >knights). > I have not tried that yet. The idea is: if a queen is supported by one > minor piece it can be very dangerous (for the opponent). If she is >alone > there are only shallow threats. > >Roland I would like to add a couple more comments to the previous post. In general, having a well developed and centralized queen is just as important as any other piece. However this is a case of "competing" general principles. Since the queen is so powerful, it is also more vulnerable to threats. A well centralized queen is often vulnerable to attacks. To get really technical, this is even true of the KING!! The king is more effective as a fighter when it's centralized and mobile. However the competing general principle of "king safety" is overwhelming in middlegame and overrides this. In the engame, the reason the king comes out in to the center is because it now do it with reasonable safety. - Don
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