Author: Russell Reagan
Date: 19:36:27 12/18/02
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On December 18, 2002 at 21:16:53, Bruce Moreland wrote: >You get into trouble when you are safe for the moment, but the computer has a >longer term threat that you can't escape. The short depth null-move search >won't detect the threat. In this case, I have to ask, will an extra two plies be able to detect that long term threat? If it's a long term threat, I wouldn't think it would matter whether you subtract two (or three) plies from the normal full width search. If the extra R plies would not be sufficient to find the long term threat, then what you describe isn't really a weakness of null-move, since that long term threat wouldn't have been found in the full width search anyway. Therefore null-move isn't the guilty party that introduced that weakness. If R extra ply would be sufficient to detect that "long term" threat, it seems like smartly used extentions or qsearch be sufficient to find it, since it would most likely be tactical in nature. Russell
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