Author: martin fierz
Date: 12:32:05 09/27/04
aloha! i just tried the following in my program: if a nullmove was tried and it failed, i saved a "nonull"-flag in my hashtable. when i got a hash hit, i checked whether nonull was set or not, if it was not set i did not attempt a nullmove. this seemed rather sensible to me - but it ended up searching about 5% more nodes on a fixed depth test suite. where did i go wrong? should i only hash nonull if i detect a mate threat?? cheers martin
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