| |
Main
Date: 28 Oct 2004 11:26:19
From: Peter Billam
Subject: Categorising PGN into its ECO ?
|
Greetings. There are some openings that seem really hard to
classify into the ECO system.
For example, 1. c4 Nf6 2. Nc3 c6 3. e4 d5
gets classified under: A16 B10 B13 B14 D31 D40 E54 !
Or, 1. d4 d5 2. c4 c6 3. Nc3 e6 4. e4 Nf6 5. e5 Nfd7 6. cd5 cd5
is found under both A16 and D31, (and the same position could
also arise in other ways involving c3, ...c5 and ...cd4)
Is there a canonical program or URL somewhere which,
given some PGN, will return the ECO(s) ?
Or are there several, all giving different answers :-) ?
--
Regards, Peter
Peter Billam, DPIWE/ILS/CIT/Servers, hbt/lnd/l8, 6233 3061
|
|
| |
Date: 28 Oct 2004 21:47:28
From: Mike Ogush
Subject: Re: Categorising PGN into its ECO ?
|
On 28 Oct 2004 11:26:19 +1000, Peter Billam
<[email protected] > wrote:
>Greetings. There are some openings that seem really hard to
>classify into the ECO system.
>
>For example, 1. c4 Nf6 2. Nc3 c6 3. e4 d5
>gets classified under: A16 B10 B13 B14 D31 D40 E54 !
>
>Or, 1. d4 d5 2. c4 c6 3. Nc3 e6 4. e4 Nf6 5. e5 Nfd7 6. cd5 cd5
>is found under both A16 and D31, (and the same position could
>also arise in other ways involving c3, ...c5 and ...cd4)
>
>Is there a canonical program or URL somewhere which,
>given some PGN, will return the ECO(s) ?
>
You could try ECOClass, which I believe is a available on the PGN
Utilities page (google "PGN Utilities" to get the URL). Also
chessbase (and other databases) do ECO classification.
Using that program or the ECO classification within Chessbase will
still have problems, because of how the classification algorithms
work. These algorithms search for the last position in a game that is
still within book and classify according to that.
For example the position reached via: 1.c4 Nf6 2.Nc3 c6 3.e4 d5 4.exd5
cxd5 5.cxd5 could have also been reached via a Caro-Kann move order:
1.e4 c6 2.c4 d5 3.exd5 cxd5 4.cxd5 Nf6 5.Nc3. I don't know how the
creators of ECO decided which way to classify the position (A16 or
B10), but I suspect they based their decision on what move order was
most frequent way of reaching a given position.
Mike Ogush
>Or are there several, all giving different answers :-) ?
>
>--
>
>Regards, Peter
>
>Peter Billam, DPIWE/ILS/CIT/Servers, hbt/lnd/l8, 6233 3061
|
| |
Date: 28 Oct 2004 18:43:41
From: Euclid
Subject: Re: Categorising PGN into its ECO ?
|
SCID, Chessbase, Fritz.
SCID is freeware but you have to learn how to use it, and it's a little bit
complicated (lotsa reading required). Chessbase is expensive. Chessbase's
chess engine GUI (Fritz) also includes an ECO classify operation -
commercial software titles such as Fritz 8, Shredder 8, Hiarcs, etc. SCID's
ECO classifications don't agree 100% with Chessbase's ECO classifications,
the last I heard, although I don't know the details. It should be a
relatively simple matter to get it right if the algorithm is written
correctly. I wrote one which worked fine on my Commodore 64 some 20 years
ago...
-E
"Peter Billam" <[email protected] > wrote in message
news:[email protected]...
> Greetings. There are some openings that seem really hard to
> classify into the ECO system.
>
> For example, 1. c4 Nf6 2. Nc3 c6 3. e4 d5
> gets classified under: A16 B10 B13 B14 D31 D40 E54 !
>
> Or, 1. d4 d5 2. c4 c6 3. Nc3 e6 4. e4 Nf6 5. e5 Nfd7 6. cd5 cd5
> is found under both A16 and D31, (and the same position could
> also arise in other ways involving c3, ...c5 and ...cd4)
>
> Is there a canonical program or URL somewhere which,
> given some PGN, will return the ECO(s) ?
>
> Or are there several, all giving different answers :-) ?
>
> --
>
> Regards, Peter
>
> Peter Billam, DPIWE/ILS/CIT/Servers, hbt/lnd/l8, 6233 3061
|
| |
Date: 28 Oct 2004 05:11:19
From: Brian Kerr
Subject: Re: Categorising PGN into its ECO ?
|
"Peter Billam" <[email protected] > wrote in message
news:[email protected]...
> Greetings. There are some openings that seem really hard to
> classify into the ECO system.
>
> For example, 1. c4 Nf6 2. Nc3 c6 3. e4 d5
> gets classified under: A16 B10 B13 B14 D31 D40 E54 !
>
IMHO after 2. ... c6 we've got A16 and once move 3 comes into play we're out
of book.
> Or, 1. d4 d5 2. c4 c6 3. Nc3 e6 4. e4 Nf6 5. e5 Nfd7 6. cd5 cd5
> is found under both A16 and D31, (and the same position could
> also arise in other ways involving c3, ...c5 and ...cd4)
>
Again, here, as of 4. e4 we are playing D10 and 4. ... Nf6 is simply out of
book. Perhaps I simplify it too much but that's the way I see it.
HTH,
Brian
|
|
