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

Author: Uri Blass

Date: 22:36:08 02/13/02

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On February 14, 2002 at 00:20:56, Slater Wold wrote:

>On February 13, 2002 at 20:34:27, Dann Corbit wrote:
>
>>On February 13, 2002 at 20:29:42, Slater Wold wrote:
>>
>>>Ok, so I have decided to run the NPS challenge all over again.  And this time,
>>>there will be a winner.
>>>
>>>HOWEVER, there will be a few differences.  No one seems to have a version 11.x
>>>Crafty, and I don't have a computer to run the old Rebels.  So this is not by
>>>choice, rather by must.
>>
>>ftp://cap.connx.com/pub/chess-engines/new-approach/Ancient-Crafty/
>>
>>It's very balky under Winboard.  I wouldn't recommend it anyway.
>
>That was going to be my next question, if anyone actually had it.
>
>>>Here it is:
>>>
>>>Century 4 vs Crafty 18.13
>>>
>>>20 games of 40/120.  Just to get a baseline.
>>>
>>>20 games of Century 4 @ 40/2 hours vs Crafty 18.13 @ 40/200 hours.  (Exactly
>>>100x the amount of time Century will have.)
>>>
>>>
>>>What this match will prove:  Not a damn thing.
>>>
>>>But you have to admit, if Crafty loses horribly in the first match, but does
>>>outstanding in the second match, wouldn't it raise your brow?  Would mine.
>>>
>>>Century will get approx. 3 minutes per move, Crafty will get approx. 200 minutes
>>>per move.  That is *quite* an advantage.
>>>
>>>I will post the games after each one is played.  With a current result.  PGN's
>>>and logs will be available by request.
>>>
>>>Ok Ed, up to you now.  All I need is Century 4.  :)
>>>(I have Century 3 by the way.)
>>
>>I think we will see a butt-blasting in Crafty's favor.  Crafty's search is a lot
>>smarter now.  A 100 minute per move straight-up match would be more interesting.
>
>'Ya think so?  I would have to say that Rebels search would have to be improved
>SOMEWHAT.  Perhaps no where near Crafty's improvement over the years, however,
>it has been approved.
>
>If it's a "butt-blasting", then I will prove what everyone has known.  Faster
>hardware = better chess playing.
>
>>Did you see Ed's chess in 2010 match (something like that).
>>Crafty was doing *very* well in it.  So extending the time for Crafty and
>>contracting the time for the opponent will just mean a one-sided whitewash.
>
>No I didn't.  Perhaps I will look into it.  And maybe........just maybe....after
>this match, I will repeat the same with Crafty 11.x and C4.  Or Shredder 6 vs
>Little Goliath.


I see no reason to use shredder6.

I believe that Fritz7 is better.

I also do not see a reason to use little goliath because it has not a simple
evaluation.

I believe that the top programs main advantage against Crafty is better search
rules.

If the target is to test evaluation against search then I think that the best
solution is simply to test Crafty against modified Crafty with small evaluation
and the same search rules.

The source code of Crafty is free so I guess that it is easy to change the
evaluation in order to have simple evaluation (for example only piece square
table).

Maybe I guess wrong because I did not learn the source code of Crafty so I do
not know if there are some assumptions about the evaluation in the search rules.


Uri



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