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Subject: Re: Danniel Corbit's prepared databases

Author: Dave Gomboc

Date: 14:15:05 09/26/98

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On September 24, 1998 at 14:41:41, Danniel Corbit wrote:

>On September 24, 1998 at 13:25:09, Dave Gomboc wrote:
>[snip]
>>So your recommendation to be would be:
>>
>>1) blow these files away
>>2) download a.zip through e.zip (the pgn files that make up "crag"?)
>>3) make the cdb files myself
>>4) I could ftp the cdb files back to you if you like?
>I would actually appreciate that very much.  My computer time when I go home
>from work is dedicated to position analysis now, and I don't want to waste a
>full night making CDB files.

I have downloaded a.zip through e.zip.  I ran A.pgn through CDB's PGN Sanitizer,
and tried to import the A-clean.pgn, with compression set to occur after 60 ply.
 CDB runs out of memory (can't allocate... abnormal program termination).  What
settings do you use for your successful imports?

I have Win NT 4, 128Mb, and a 300Mb or so swap.

>>How are games classified between openings?  e.g. caro-kann panov-botwinnik
>>attack games might turn into nimzo-indian positions.  which book will these be
>>under?
>The games were classified by EXTRACT, and goes down to the variation level.
>There could be some screw-ups in the ECO classifications.  They are really
>classified by ECO codes, and if you find any mistakes, please let me know.
>Also, some that were preclassified by humans might be goofed up also.

I have never heard of EXTRACT.  Do funny move orders screw it up?  (e.g. would
the game 1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.c5 Nd5 5.Nc3 c6 6.Nxd5 cxd5 7.d4 d6 8.cxd6
exd6 9.Nf3 Nc6 be classified as a different opening as 1.e4 c5 2.c3 Nf6 3.e5 Nd5
4.d4 cxd4 5.Nf3 e6 6.cxd4 Nc6 7.Nc3 d6 8.Nxd5 exd5 or would they both show up in
the same opening (whether that is Alekhine's Defense or the c3 Sicilian)?

Dave Gomboc



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