Re: [Bug-gnubg] RE: Fw: GNU Backgammon For Windows

[Joern Thyssen]

> >Subject: Fw: GNU Backgammon For Windows
> >
> >I've been trying to make sense of the gnuBG implementation of the .SGF 
> >file format. I'm hoping once I've done that I'll be able to write 
> >something to extract info and compile it. Many things come to mind, eg. 
> >racing games where I have the lead when contact is broken, etc. Has this 
> >already been documented, or is anybody else working on it?
> >
> >What I've managed is available for viewing at 
> >http://members.rogers.com/abp/SGF/SGFgnuBG.htm
> >
> >If somebody would care to explain what I haven't already got I'd be happy 
> >to put it all together and then maybe Albert could put it in his tutorial, 
> >or it could go in the FAQ or somewhere for others to make use of.

I assume you're familiar with <URL:http://www.red-bean.com/sgf> in
particular
<URL:http://www.red-bean.com/sgf/backgammon.html#properties>?

Some of your missing properties can be found there, for example, PB:
<URL:http://www.red-bean.com/sgf/properties.html#PB>.

BTW, the semi-colon is kind of separator between nodes. You can find the
BNF for SGF at <URL:http://www.red-bean.com/sgf/sgf4.html>, e.g.,

Node       = ";" { Property }

hence the leading semi-colon before all nodes. 

There is also a number of undocument gnubg specific extensions to SGF,
so it would really be a great help if you're documenting them :-) I'm
not sure this should go into the tutorial as this is probably for
super-users, however, it's certainly welcome as a chapter for the
manual.

Joern