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Subject: Re: Ruffian 2.0.0 vs. Shredder 7.04 +0 =0 -4

Author: Uri Blass

Date: 17:47:35 12/22/03

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On December 22, 2003 at 17:54:55, Russell Reagan wrote:

>On December 22, 2003 at 03:12:03, Christian Koch wrote:
>
>>- hashtables = 256 MB for both engines
>
>How much total physical RAM on the system?
>
>
>>- GUI = Hiarcs9
>
>Check and make sure that each engine is actually getting its full hash table
>allocation. Gian Carlo Pascutto reported here that UCI engines would sometimes
>only use a 1MB hash table in the Fritz GUI even when a larger size was
>specified.
>
>
>>- book = REMIS.CTG for both engines
>
>I agree with others that each engine using its own book would be much better.
>Otherwise your results really don't show anything meaningful to potential users
>of Ruffian. Maybe the remis.ctg book and Ruffian don't go well together.
>
>I recall Omid talking about how his program scores better than 80% against
>Junior when Junior isn't using its tournament book (I think he said he used the
>Fritz book instead), but when Junior uses its tournament book (and thus gets
>into positions that are better suited for Junior), Junior wins the majority of
>the time.
>
>In any case, your games don't tell us much about what we might expect from
>Ruffian 2.0 if we purchased it. If one of the engines cannot use its own book,
>that is one thing, and the lesser of two evils would be to give use another book
>for the engine that can't use its own. But if they can use their own books, why
>isn't that being done? That seems to be the most logical and straightforward way
>to test the engines. I think most users are interested in how the engines
>compare to one another out of the box.

I am not sure what most users are interested in.

I am interested more in the case when both engines use the same book that they
do not know because I use the engine for analysis of positions that are not
necessarily result of the book of the engine.

Uri



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