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Subject: Re: Searching 18-20 ply just using nullmove

Author: Vincent Diepeveen

Date: 20:43:57 08/17/00

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On August 17, 2000 at 23:35:50, Dann Corbit wrote:

>On August 17, 2000 at 23:29:49, Vincent Diepeveen wrote:
>
>>On August 17, 2000 at 23:22:27, Dann Corbit wrote:
>>
>>>Can you achieve this depth at tournament time controls (on average) for all the
>>>positions in a game?
>>>
>>>Can you achieve this depth at tournament time controls (on average) for the
>>>opening positions?
>>>
>>>Can you achieve this depth at tournament time controls (on average) for the
>>>middle game?
>>>
>>>By tournament time controls, of course I mean 40/2
>>>

>>>If you are able, then I think this really is something incredible!
>>
>>Of course i can't do that at tournament level yet.
>>I don't get a billion nodes yet totally at 40 in 2!
>>
>>My claim was 'several' billion nodes.
>>
>>So give me a game, and i'll let it analyze after WMCC at each
>>move over a night.
>>
>>It's a matter of a short period of time and what you see after a full
>>night of analyzes now, you will see then at tournament level.
>>
>>Bigger hashtables and better evaluation and better sorting and
>>search efficiency will only make searches deeper with less nodes as
>>DIEP uses now.
>
>Assuming a doubling of CPU power every year, how long until Diep can achieve 18
>plies on average at 40/2?

Oh well in wcc 99 at 3 minutes a move at a quad xeon from Bob,
with 400mb hash in endgame i searched always 15 to 20 ply.

However endgame of DIEP was real BAD then. Now after i improved endgame
considerable, it suddenly searches a lot less there! i haven't figured
out yet why it doesn't search that deep in endgame anymore.

My focus obviously is not at depth, but at evaluation!
That is, first get a few plies, then fix evaluation!

At 5:43 AM here it's hard to calculate, taking into account bigger
hashtables as i have now!

First let's do a few experiments next few weeks with this 256mb RAM dual 800,
then after that let's extrapolate it!












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