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Subject: Re: Crafty 16.4T-engine for... is not identical to the real crafty

Author: blass uri

Date: 16:00:20 02/05/99

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On February 05, 1999 at 18:37:30, James T. Walker wrote:

>On February 05, 1999 at 17:39:42, Robert Hyatt wrote:
>
>>On February 04, 1999 at 23:05:04, James T. Walker wrote:
>>
>>>On February 04, 1999 at 22:05:26, Robert Hyatt wrote:
>>>
>>>>On February 04, 1999 at 19:55:03, James T. Walker wrote:
>>>>
><<<<<< snip
>>>>
>>>>
>>>>I'm not sure what you are testing, but _no_ 16.x version is 100 points better
>>>>or worse than another.  That is a _serious_ difference, which is lacking in
>>>>these.
>>>>
>>>>By my testing, 16.4 is quite a bit better than prior versions, based on a _lot_
>>>>of engine vs engine games on the chess servers...
>>>
>The games were played at G/10 or G/5.  I do this with early versions just to get
>a quick read on how it is doing.  If you rember, when I asked you earlier about
>where you thought Crafty was at it's best you effectively said to try anything I
>wanted.  I've tested Nimzo vs Fritz and Junior and they seem to play about as
>close at G/10 as they do at 40/90 with maybe Fritz being better at G/5 or G/10
>than the others.  Anyway I moved the time up to G/25 and so far Crafty is
>leading Nimzo by +9 -6 =7.  That's quite a turn around from 25-7 favor Nimzo.

I think that crafty as an engine for fritz/Junior is not identical to the real
crafty.
I found that crafty as an engine for Junior5 is using its time to search even
when there is a mate in 1.

It is not a practical problem because crafty wins in both cases but I do not
like it.

I do not know if there are other changes in the crafty as engine for... and
I do not know if crafty as an engine for Junior is weaker or stronger than the
real crafty.

I guess it is not stronger.

I am interested to know what is the result of the real not parallel crafty
against the same Nimzo with the same openings in 25 min/game.

Uri




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