Author: Kurt Utzinger
Date: 13:04:48 06/06/03
Go up one level in this thread
On June 06, 2003 at 15:40:33, Uri Blass wrote:
>On June 06, 2003 at 15:16:51, Kurt Utzinger wrote:
>
>>On June 06, 2003 at 07:54:07, Uri Blass wrote:
>>
>>>On June 06, 2003 at 07:06:41, Drexel,Michael wrote:
>>>
>>>>On June 06, 2003 at 06:15:36, Ryan B. wrote:
>>>>
>>>>>Making a strong opening book may not be so high on his to-do list at this time.
>>>>>I don?t see how where he is from has anything to do with his opening book. The
>>>>>best of the free programs not named rebel 12 I have seen just generate an
>>>>>opening book from pgn files such as gm2600.pgn This way of making an opening
>>>>>book requires no actual chess skill and defiantly in no way discriminates based
>>>>>on ones home land.
>>>>
>>>>And such books are definitely weak. The Ruffian book is relatively weak for
>>>>example.
>>>
>>>Ruffian book seems to be very good based on Ruffian results in Leo tournament.
>>>Uri
>>
>> From our tests with Ruffian 1.0.1 UCI under
>> Fritz-GUI, we would say that the book of
>> Ruffian is a good one. The program scores
>> always better with its own book in comparison
>> when we used the remis.ctg.
>> Kurt
>
>Do you say that Ruffian scores better under Fritz gui when all programs use
>their original books and not when all programs use remis.ctg and after every
>game they play a game in the same opening with opposite colors?
>
>Do you think that the commercial programs have inferior book relative to Ruffian
>or Maybe the problem is that Ruffian has a bug in using other books and it's
>time management or it's moves are broken for some reason when you force it not
>to use it's book.
>
>Uri
Difficult questions. We just noticed that Ruffian 1.0.1
did somewhat better in matches where all engines used
their own books. This may have happened accidentally
and due to the too less games I do not want to guess
anything. In principle, the remis.ctg [draw book] is
a very good book and if set the params to play a game
with the same opening with opposite colours, we think
it's the most fair thing we can do in engine/engine
matches. We [me and Rolf Bühler], are not aware of
a Ruffian bug when using other books. And as to the
quality of the comercial books: I can't claim they are
inferior but must of course admit that I have never
studied this question deep enough. I am not at all an
expert with opening books and therefore not competent
enough to say something concrete in a positive/negative
sense.
Kurt
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