Author: Gerd Isenberg
Date: 00:53:10 07/25/03
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On July 25, 2003 at 02:41:22, Dann Corbit wrote: >Now, a qsearch ending in checkmate may or may not really be a checkmate. After >all, we only tried certain moves and it could very well be that the checkmate >could be avoided. > >So, the burning question is... >What should we do when the qsearch ends in a mate? >There are lots of alternatives, from the primitive "return a mate" to "send a >danger signal up the tree and let the regular search deal with it" to >"extending" to... > >What is your favorite choice and why? Hi Dann, if in qsearch check, i even try at least one quite move out of check (if any), if still <= alpha and no "good" capture of the checking piece was possible. Was very surprised recently, that some return eva in qsearch, if in check and if eva >= beta: http://www.talkchess.com/forums/1/message.html?307576 Gerd
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