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Subject: Re: Russell's post is an all-time classic, IMHO.

Author: Russell Reagan

Date: 11:15:12 10/14/03

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On October 14, 2003 at 12:22:09, Roy Eassa wrote:

>
>IMHO that was one of the very few all-time classic postings in CCC's history.
>Kudos.

Thank you Roy. I should make a few clarifications.

>For instance, in a 1/0 game, if you have a big weakness, it will be
>exposed by an engine that is more solid all around.

An example: I played 1/0 games between Ruffian and various engines. SOS lost
every game on time. Aristarch scored like 4.5 out of 30. Crafty had three
results:

Lost 12.5-17.5
Won  20.5-9.5
Lost 12.5-17.5

At longer time controls SOS and Aristarch would certainly be very competitive
with Crafty. At 1/0, they have no chance. I attribute this to Crafty being "more
solid all around." Better tuned time management is something that a lot of
authors probably don't spend a lot of time on. People like Bob and the
commercial authors, who have the time to really work on those kind of details
can get to a point where their engine doesn't have any significant weak spots.
SOS can hang in there with Ruffian, at longer time controls, but at blitz its
time management is too poor.


>I played
>Ruffian vs. Crafty in a 1/0 match, and in the majority of games, Ruffian's score
>would jump up, and Crafty's score would do the same within 2-4 moves usually.

I should note that this was the multi-probe cut version of Crafty that I saw
this behavior with. The default Crafty did much better in 1/0 against Ruffian,
as was reported above.


>For instance, you might fix your poor time
>management and king safety, but your engine might still get the pulp beat out of
>it because of some other weakness.

That should be, "because of some other weakness, relative to the stronger
engine."



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