I'd like to see result in the SGF files of completed go games.

SGF files normally include a special tag that says who won and how. The tag is called RE), and it goes in the first node of the SGF, along with other tags like SZ (size), HA (handicap) and KM (komi).

For example, if white won by resignation, the tag would be RE[W+R]. If it was a timeout, RE[W+T], or if black won by 10-and-a-half points, RE[B+10.5]. Ties should be RE[0], but I don't think ties are possible with the rules BrainKing uses, anyway.

This is especially useful in games won by resignation or timeout, when there's no other way to tell who won.