Flume is a close relative of Dots-n-Boxes which can be played with a Go board and stones.

The odd-sized square board starts out empty. Two players, Black and White, take turns placing stones of their own color on empty points of the board. If the stone you placed is orthogonally adjacent to one or zero empty points, you must place another stone while it is still your turn, and so on.

When the board fills up, whoever has the most stones on the board wins.