: ( 648bp)
Black gives atari at the upper edge.

:
Black ends in gote.

:
White's atari is absolute sente.

:
White secures one point of territory.

:
Black ends in gote for another time, but this does not hurt here.

Black plays 0/1 reduction.

Capture Variation:

Compared to the superordinate variation ...

• White lost one point of territory at the upper edge.
• White got an additional point of territory in the left centre.

In total, gains and losses compensate for each other.

Black + 3 => Black + 3

Semeai Variation:

Compared to the superordinate variation ...

• White lost one point of territory at the upper edge.
• White got an additional point of territory in the left centre.

In total, gains and losses compensate for each other.

White + 3 => White + 3