Author: Uri Blass
Date: 00:09:17 10/17/02
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On October 16, 2002 at 23:35:10, Robert Hyatt wrote: >On October 15, 2002 at 14:01:35, Johan Melin wrote: > >>On October 14, 2002 at 07:34:16, Bas Hamstra wrote: >> >>>Bob, did you read the Hsu transcript posted here? It is pretty clear to me that >>>Hsu himself says 12 ply fullwidth *total*. Case closed. Please read the complete >>>transcript. >>> >>>Best regards, >>>Bas. >> >>I agree. The transcript with Hsu is clear. But it would be out of character for >>CCC if everybody just agreed with each other, there still has to be a fight ... >>;) >> >>/Johan Melin > > >Here is the relevant part of the transcript: > >----------------------------------------------------------------------------------------------------------------------- >CrazyBird(DM) kibitzes: 12(6) means 12 plies of brute force (not >counting the search extensions & quiescence). >CrazyBird(DM) kibitzes: 6 means the maximum hardware search depth >allowed. >CrazyBird(DM) kibitzes: this means that the PV could be up to 6 plies >deeper before quiescence. >----------------------------------------------------------------------------------------------------------------------- > >OK, some questions: > >1. If 12(6) means 12 plies total, with 6 done in hardware, how do you reconcile >that >_last_ sentence above (the PV could be up to 6 plies _deeper_ before >quiescence). >Deeper than what? Only possible answer is deeper than 12 plies. No I think that he meant deeper than the pv that was in the logfile. > >2. If 12(6) means 12 plies total, with 6 in hardware, what does 4(5) mean? 4 >plies total >with 5 done in hardware? Which means the SP hardware does _no_ searching and >that >_everything_ (and then some it seems) is done by the hardware chess chips? No It is possible that the original depth is 4 but the hardware got 5 plies because of 2 ply extension. They did not do more than 2 ply extension for 2 plies but I think that there was no rule that they did not do 2 ply extension for 1 ply. > >Neither of those matches what he says above. > >I read his explanation of 12(6) as "12 plies of brute force, up to 6 more plies >of hardware >search [which is not brute-force as he has explained elsewhere, because of the >forward pruning >they were doing]". I never read him say up to to 6 *more* plies of hardware Uri
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