Author: Robert Hyatt
Date: 07:09:50 01/18/00
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On January 17, 2000 at 15:36:13, Dave Gomboc wrote: >On January 17, 2000 at 09:34:18, Robert Hyatt wrote: > >>On January 17, 2000 at 03:39:03, Dave Gomboc wrote: >> >>>On January 17, 2000 at 03:11:34, Jouni Uski wrote: >>> >>>>Yes stunnigly they are available at: >>>> >>>>http://www.research.ibm.com/deepblue/watch/html/c.html >>>> >>>>First thing I notice is, that search depth is not very convincing at all - >>>>mostly 11-12 ply (also in endgame part)! Have I read log wrong way? Most >>>>Chessbase engines got same ply in standard PC... >>>> >>>>Jouni >>> >>>The search depth reported is what the host software is reaching before handing >>>off to chess processors. >>> >>>Dave >> >> >>DId this come from Hsu or Campbell? Makes sense (see my prior post in this >>thread) based on simple math. But I have never thought to ask... > >IIRC it was reported in Search Control Methods in Deep Blue from an AAAI >workshop in 1999 (authors: Hsu, Campbell, Hoane). I have the paper somewhere >but not in front of me, so I hope I remembered properly. > >Incidentally, the DB host software did have some selective search (but not >null-move), according to the paper. > >Dave The hardware did too. IE in the capture-part of the hardware search, they didn't search _all_ captures. They do something like I do in crafty to cull captures that appear to be hopeless...
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