Live shape
Difficulty: Intermediate Keywords: Life & Death, Go term
Alex Weldon: The way I use this term, at least, is to mean any large eye? that is not a dead shape or one that results in ko for life. In the middle of the board (and, I think, on the edge, but correct me if I'm wrong), any eye of seven points or more (where the surrounding stones form a single group) is a live shape. As always, special properties of the corner can change this.
Others are, of course, free to add to this page, but it's probably more useful to deal with dead shape and say this is an opposite, and leave it at that.