Computer Chess Club Archives




Subject: Re: EPD format

Author: Dann Corbit

Date: 11:40:12 11/07/00

Go up one level in this thread

On November 07, 2000 at 07:36:09, Stefan Meyer-Kahlen wrote:

>Sone people asked me to add a feature in Shredder to produce a epd file with the
>results when running testsuites so the results can be imported into bookup.
>Below is the output of Shredder of a testfile. Can anybody please check if
>bookup can read this?
>Is there no token for the search depth?

It is (I think) *the* most important measure and was completely left out.  The
number of seconds (acs) is pointless, since it might have been a 90 MHz Pentium
or it could be Deep Blue.  So what do the seconds mean?  Nothing.

Crafty uses acd, and hiarcs uses dep for depth.  I know that crafty has a
toolkit written by Steven J. Edwards which is (If I recall correctly) public
domain and can be used by any program.  It is, without question, the best and
most standard EPD processor.  There is some EPD processing code on my ftp site,
also.  It's in C++ and was written by Thomas Mooney III.

Crafty has an option to clean up epd (called epdpfdr) that produces EPD output
that most programs can read.  You have a few errors in your output below.

>   Stefan
>rq2r1k1/5pp1/p7/4bNP1/1p2P2P/5Q2/PP4K1/5R1R w - - bm Nxg7 BT-2630.1; ce 182; acs

rq2r1k1/5pp1/p7/4bNP1/1p2P2P/5Q2/PP4K1/5R1R w - - bm Nxg7; id "BT-2630.1"; ce
182; acs

>0; acn 106652; pv 1.Nxg7 Kxg7 2.Qxf7+ Kh8 3.Qh7+ Kxh7 4.Rf7+ Kg6 5.Rf6+ Bxf6
>6.h5+ Kxg5 (38.748) 112.9; c0 depth=8

No numbers in the pv!
Like this:
Nxg7 Kxg7 Qxf7+ Kh8 Qh7+ Kxh7 Rf7+ Kg6 Rf6+ Bxf6

Also (a common mistake) is to put ... in the front of the pv when it is black to
move.  This is not allowed.  You did not do that, but I just wanted to mention

Also, the comment c0 should be quoted and the line should end with a semicolon
like this:
c0 "depth=8";

>6k1/2b2p1p/ppP3p1/4p3/PP1B4/5PP1/7P/7K w - - bm Bxb6 BT-2630.2; ce 82; acs 0;
>acn 147273; pv 1.Be3 Kf8 2.Bg5 f5 3.Kg2 Kf7 4.b5 axb5 5.axb5 Ke6 (73.507) 130.7;

This stuff:
 (73.507) 130.7;
is not allowed except in the comments field.


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