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Subject: Re: Opening Book inflation

Author: pete

Date: 12:08:50 08/12/00

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On August 12, 2000 at 14:48:09, john watson wrote:

>On August 12, 2000 at 14:25:55, Winfred Craft wrote:
>
>>On August 12, 2000 at 14:17:46, john watson wrote:
>>
>>>On August 12, 2000 at 13:56:04, Jorge Pichard wrote:
>>>
>>>>On August 12, 2000 at 13:38:41, john watson wrote:
>>>>
>>>>>Does anybody have any idea how to quickly inflate Deep Junior's
>>>>>book from 2,900,000 to 3,000,000 positions ?
>>>>>I like round numbers, you see.
>>>>>Maybe by importing huge .pgn or .cbh files of unusual games ?
>>>>>The quality of the games is less important, as long they inflate the book it's
>>>>>OK with me.
>>>>>But from where can such files be downloaded ?
>>>>
>>>>I once was told 10 years ago by a local GM friend of mine that the number of
>>>>openings which I was capable of remembering was not that important, but how good
>>>>I understood the position after the opening was over is really what count.
>>>>Therefore, the Quality of the opening lines whether it is 2,900,000 or just
>>>>59,000 good opening lines is better than having a larger opening lines as long
>>>>as those opening lines are free of errors and are the best for that particular
>>>>program.
>>>>
>>>>PS: If it take closed openings to defeat good programs like Fritz 6a or junior 6
>>>>programmers should concentrate on programming those closed openings lines like
>>>>the stone wall defense used by Kramnik against Deep Junior, plus special ALS
>>>>Anti lock system in case other programmers apply the same technique in order
>>>>to make their programs perform better.
>>>>
>>>>Pichard.
>>>
>>>That's beside the point, I just want a 3,000,000 position opening book,
>>>that's all.
>>
>>I have a collection.pgn of games only between computers but it contains
>>nowhere near 3 million moves.
>>Winfred
>
>
>Well, if the size of your collection.pgn isn't over 6Mb,
>please send it to: j@watson.as

Ok , after having read this whole thread I am sure I can help you with your
strange wish ;-) :

Get the file

2600.zip

from Dann Corbitt's ftp-site at

ftp://38.168.214.175/pub/

This is a high-quality pgn-file from games where both players were rated 2600
and higher .

This should

1.) increase your booksize beyond the magic number you want to reach
2.) not hurt the quality of Junior's book too much.

Have fun.

pete



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