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Subject: King danger extensions

Author: James Robertson

Date: 13:26:53 02/16/99


My program keeps falling prey to king attacks. Although it does very well
tactically when it's king is not threatened, it frequently plays combinations
that win material (it thinks), only to find, say, a back-rank mate that went
unnoticed. I am using a one-reply-to-check extension, the mate extension after
null move, and extending half a ply whenever there is a check in the tree. No
check detection is done in the q-search. Are there any other standard check
extensions I am not doing?

James



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