Author: Robert Hyatt
Date: 15:28:31 03/02/00
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On March 02, 2000 at 05:12:10, Ed Schröder wrote: >On March 02, 2000 at 04:45:46, Jeremiah Penery wrote: > >>On March 02, 2000 at 03:58:13, blass uri wrote: >> >>>On March 02, 2000 at 01:42:43, Ed Schröder wrote: >>> >>>>Nowadays programs hit a deeper ply depth than DB. See the log files >>>>on the IBM site. >>>> >>>2)I understood also from hyatt's posts that you need to add 3-4 plies to the >>>depth in the logfiles of the IBM site to get the real depth. >> >>Actually, it's more than that. For this search: >> >>depth score time PV >>11(6) 48 T=204 Qa7... >> >>You have a depth of 11 PLUS *six* plies of hardware depth. So a total depth of >>_17_. That seems to be about the average depth of most of their searches. >>That's a bit beyond PC programs. And we know they were extending probably more >>than PC programs also. > >Is there an official statement of this? > >It's all not so clear. > >We also don't know which or how many extensions are done. The same >applies for most chess programs BTW. We can only guess. > >Ed This is official from the DB team, two different members confirming the notion that (x) is additional plies searched only by the hardware. I told vincent for several years that when they said "10" plies they meant something different than he did. This was common knowledge for deep thought. I just never thought to re-state it since it was mentioned so many times at the ACM events they participated in. 11(6) suddenly becomes frightening, doesn't it? :)
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