: ( 434)
White saves her stones on the left side, and prepares to capture Black's group there.

:
Black defends his upper left territory, and happily sacrifices his group on the left edge.

:
Black plays this large defensive move in sente, threatening to reduce White's group on the upper edge to only one eye.

Black wins by six points.

This margin of Black's win seems to be quite stable in the F-path, independently of White's counter-measures.