: ( 166)
Black connects along the edge.

:
White blocks, so pre-empting Black's push here.

:
Black continues with the path of our solution. Eventually, he must let his pivotal stone become captured, to keep 13 liberties (; i.e. points that White must occupy in the semeai) for his group. We suppose that a further exchange of , , would not help Black here, but would give a similar result.

///:

Capture Variation:

White gained six points (/), compared to the correct sequence, and now wins by one point.