Author: James Swafford
Date: 17:14:55 04/29/99
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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
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