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Subject: Re: The NPS Challenge =-= All over again........

Author: Ed Schröder

Date: 02:13:19 02/14/02

Go up one level in this thread


On February 14, 2002 at 04:29:09, Uri Blass wrote:

>On February 14, 2002 at 03:12:14, Dann Corbit wrote:
>
>>On February 14, 2002 at 02:46:36, Slater Wold wrote:
>>[snip]
>>>My main thinking here is:
>>>
>>>Rebel will more than likely win 75% of its games against Crafty in the 40/120.
>>>Now if Crafty can beat Rebel 75% of the time in the 40/12000, what does that
>>>show?  That Crafty is "rebel strength" when given a 100x time odds?  Or that
>>>simply HW = chess program performance?  Well, I think all that will be
>>>determined in the moves in makes in the time odds games.
>>>
>>>Little Goliath vs Shredder was something that GCP suggested.  LG is extremly
>>>fast, and from what I understand, not overly complex.  Shredder on the other
>>>hand is as slow as they come, and again, from what I understand, very complex.
>>>
>>>Does MHZ = ELO.  And if it does, how much?  Imagine the stink if Rebel were to
>>>win 75% in 40/120 and 75% in 40/12000.
>>
>>I am guessing that Rebel is about 100 ELO stronger than crafty.  I also believe
>>(on scanty evidence based on the chess in 2010 experiment) that the advantage
>>vanishes at very long time control.
>
>I agree that the difference is probably more closer to 100 elo than 200 elo but
>I do not believe that the difference vanishes at long time control.
>
>I believe that it was truth in the past because Rebel had search holes because
>of it's selective search algorithm but I guess that Ed improved his program from
>that time.

I have a different view. In those days Crafy was a weak positional player while
Rebel was a much more polished and tuned engine. I still hold my claim the Rebel
of that time could beat the Crafty of that time even if Crafty was given 100 x
more time.

It was only one game, but just have a look at the game itself, it proved what I
was saying all the time: having a good eval is worth many plies.

Looking at nowadays Crafty I see a much better tuned engine, it would be silly
to lengthen my claim.

Ed


>Uri




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