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Subject: Re: Opening Book inflation

Author: john watson

Date: 12:33:16 08/12/00

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On August 12, 2000 at 15:08:50, pete wrote:

>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

Thanks Pete, but it got me only 68 new positions
out of 27000 games.
It's not a strange wish. If one has a predilection for round numbers and
wants to reach 3,000,000 positions.
Some have opening books of 5 or even 10 million positions.



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