Author: Owen Lyne
Date: 09:18:12 09/17/99
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On September 17, 1999 at 12:07:57, Peter Fendrich wrote: >On September 16, 1999 at 22:52:42, Robert Hyatt wrote: >>First, don't clear the killers, ever. Second, use them before generating any >>moves, after making sure each is a valid move in the current position... > >Well, I don't clear the killer but the counter is set to 0 in the beginning of >each new ply... Hmm - I'm wondering what Bob means by 'ever' here. For example, I know he likes to keep the hash table through a game, some informationm remains useful, rest gets overwritten, so no reason to waste time clearing it especially. But with killers, does some thing work. I mean, you surely don't want Nxf7+ to remain in the killers once both of your knight has been exchanged off? Or perhaps even if there is no longer something on f7 to capture (or do killers exclude captures and/or checks, are those looked after somewhere else? If so, some of my points remian, and some don't ;) Or will a killer than no longer kills get removed gradually in the same way old hash does, so there's no point specifically clearing it? Owen
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