Author: Tom Kerrigan
Date: 15:57:38 05/31/00
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On May 31, 2000 at 18:02:42, Bas Hamstra wrote: >Tom, > >I read another thread about Killers and have an opinion on it. > >- Doing captures separately speeds you up considerably Depends on what you mean by "considerably." I'm doing a full width search on ~10% of the nodes that I search. So the speedup that I can expect is significantly less than 10%. >- Doing an on the fly legality check for killers speeds you up noticably Not if you've already generated them. :) >- Doing SEE based pruning of losing captures in the qsearch cuts the number of >nodes and improves node/qnode ratio. You don't have to SEE sort for it. I doubt >SEE sorting is a winner anyway. I've used SEE for a long time and I haven't been extremely happy with it. It's not in my experimental program. >- Having the former, you can skip losing captures in the normal search as well >with it, and do those later. Improves sorting noticably. In my previous programs, using the SEE to order moves had a speedup of 10%. -Tom
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