Author: Peter Kappler
Date: 09:25:12 04/30/99
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On April 29, 1999 at 20:14:55, James Swafford wrote: >On April 27, 1999 at 16:08:59, Peter Kappler wrote: > >>On April 27, 1999 at 15:35:06, Will Singleton wrote: >> >>> >>>Amateur doesn't find the move after 2 minutes and 9 ply, liking Be7 with +3. I >>>better get busy and try out the single-reply extension. Problem is, I use >>>psuedo-legal moves, so I'm not sure how to tell when I only have one reply! >>> >>>Will >> >> >>I have the same problem with Grok, and it's making it difficult for me to >>implement this extension efficiently. >> >>--Peter > >You don't have to generate legal moves for every position >to implement this, just nodes in which you are in check. > >I think in "non tactical" positions this may be a loss, >especially if the function used to determine if a king >is attacked is slow. > >It would be interesting to try to derive some kind of >switch to turn this extension on or off for several moves >in the search based on certain properties of the position >or "openness" of the king. > >Just a thought.... > >-- >James Hi James! Grok is able to do this test only when appropriate, but it still slows things down quite a bit. I need to do more experimenting... --Peter
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