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Subject: Re: S-7 &F-8 without books should be able to beat Ruffian with Book !

Author: Roy Brunjes

Date: 18:22:13 05/02/03

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On May 02, 2003 at 10:03:06, Jorge Pichard wrote:

>On May 02, 2003 at 08:36:30, Djordje Vidanovic wrote:
>
>>Hello Tony,
>>
>>which book is Ruffian using?  Sorry if I am pestering you with a question
>>already asked, but I am really interested.  Fritz 8 must be using its own Fritz
>>8 book (by A. Kure), how about Ruffian?
>>
>>Thanks in advance.
>>
>>-- Djordje
>
>Since the difference in rating is probably more than 40 points between either
>Shredder 7 or Fritz8 in comparison to Ruffian 1.0.1, It would be interesting to
>see if Shredder 7 or Fritz8 without their opening boos could still beat Ruffian
>with its own Book, in a short match of 20 games at G/90 since any shorter time
>control would benefit the program that doesn't have to thinks for itself in the
>opening stage.
>
>PS: Another interesting Idea would be to implement an algorithm that enable
>programs to check each opening move for at least 10 seconds to see if the
>program could detect a better choice of move order and replace that weak move
>with a stronger one. The reason for implementing such loop would be logical in
>the case that an opening book has an inferior move which was selected long time
>ago by a weak master or even a strong GM. I have noticed that when you pit two
>programs of almost equal strength (within 20 points lower or higher) specially
>in Engines vs Engines match under Fritz GUI. Most programs always win with
>either Black or White regardless if you switch programs when playing the same
>opening.
>
>Jorge

Your idea was already implemented back in Rebel 10 -- it is called EOC
(Encyclopedia of Chess).  There are options in Rebel to tell it to look at a
move in its book (well, in the EOC actually) and then determine if there is a
significantly better move it can make.  It avoids nasty situations where even
2600+ players played a really weak move and the pgn game collection you pulled
that game from doesn't give you a "heads up" that the move played was weak.

Rebel can avoid making the same blunder the GM did even though that game is in
the EOC.

Roy




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