Author: Artem Pyatakov
Date: 00:55:18 03/30/04
Hello again, Thanks to everyone who has been active in my previous thread - all of these responses have been helpful and show the diversity of opinion that will definitely be discussed in my thesis. As I attempt to run some experiments for my thesis work, I have run into these two questions: 1) Do you think the Bratko-Kopec test suite is at all a reasonable test? Or is this known to have a lot of problems? Is it outdated? I've been running experiment on ECM and WAC, but a lot of the previous chess research uses Bratko-Kopec, so I am thinking of perhaps rerunning my experiments with that testsuite. 2) A completely unrelated (to my research) idea has occured to me, as I was documenting various parts of a standard chess program in the paper. Have people tried messing around a lot with the Killer Heuristic that everyone finds so helpful? Do any of you use anything else besides the "2 killers" approach in Crafty? A very, very quick experiment with about 5 positions showed a measurable decrease in node counts if I for instance also checked the Killers from two and four plies lower and from two plies higher. What have people tried in this area? What about 3 or 4 killers? Thanks in advance! Artem
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