Author: Christophe Theron
Date: 09:28:20 03/30/01
Go up one level in this thread
On March 30, 2001 at 09:30:06, Vincent Diepeveen wrote:
>On March 29, 2001 at 13:31:59, Christophe Theron wrote:
>
>>On March 29, 2001 at 09:14:57, Robert Hyatt wrote:
>>
>>>On March 29, 2001 at 06:22:13, Jouni Uski wrote:
>>>
>>>>On March 29, 2001 at 06:17:50, Alexander Kure wrote:
>>>>
>>>>>On March 29, 2001 at 04:37:19, Tony Werten wrote:
>>>>>
>>>>>>Hi all,
>>>>>>
>>>>>>until what depth do various programs probe the tablebases ?
>>>>>>
>>>>>>cheers,
>>>>>>
>>>>>>Tony
>>>>>
>>>>>
>>>>>Hi Tony,
>>>>>
>>>>>In London 2000, I let Nimzo 8 play with a depth of 6 plies, but later I came to
>>>>>the conclusion that 8 plies might be better overall. This is indeed the default
>>>>>setting of NimzoX and Varguz playing on ICC.
>>>>>
>>>>>Greetings
>>>>>Alex
>>>>
>>>>Sorry one stupid question: is this the first or last 6/8 plys?
>>>>
>>>>Jouni
>>>
>>>
>>>His statement would make no sense if it were the _last_ 6-8 plies. Those
>>>are the ones that kill performance if you aren't careful. The first 6-8 plies
>>>don't cost a thing.
>>
>>
>>
>>But it could also mean it probes TBs in all the plies except the last 6/8.
>>
>>Meaning that if Nimzo is doing a X plies search, then the program probes the TBs
>>in the tree for all nodes that have a distance from the root below or equal to
>>X-6 (or X-8).
>>
>>I don't think that probing the TBs in the first 6/8 plies of the search makes
>>any sense.
>
>Do yo mean this in absolute terms or do you mean this in
>terms of "doing probes last few plies like qsearch is more important
>as doing probes in the first 8 plies?"
>
>In the first case i would disagree. in the second case i would agree.
What I wanted to say is that probing the TBs in the first 6/8 plies ONLY does
not make sense.
I mean that there must be some mechanism to somehow relate the depth of the
probing to the depth of the search.
If you are going to depth 25 at this time, you certainly don't want to stop
probing the TBs at depth 8.
However Alex answered something that is still unclear to me which would suggest
that in the first 8 plies he does some kind of probe, and he does another kind
of probe in the next plies. But I can be wrong here.
Christophe
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