: ( 648aw)
White blocks at the top, so losing one tempo in the Main Semeai.

:
Black is able to capture White's single stone at the upper edge now.

:
White takes some territory in the centre.

As usual, she would not gain from blocking with at the upper edge. Black would reply with the atari at in the left centre.

:
Black reduces White's territory at the top by another point.

:
Again, Black captures White's two stones in the lower left.

Compared to the superordinate variation:

• Black's cumulated gain at the upper edge is three points.
• White got an additional point of territory at the top.
• White gained an additional two points of territory in the left centre.

In total, gains and losses compensate for each other.

The final scores of the game will remain Black + 1 / White + 3.