: ( 58dv)
Black captures White's single stone in the upper right.

:
White attaches in the left centre, aiming at creating some points of territory there.

:
Black defends his lower left corner, also taking the last but one liberty of White's stones in the corner.

:
White has to give atari at Black's nakade.

:
Black is able to push at the top.

:
And to capture White's single stone at the upper edge.

:
White secures two points of territory in the left centre.

:
Black pushes once more at the upper edge.

:
Black is able to connect his two stones.

Black plays 1/1 reduction.

Capture Variation:

Compared to the superordinate variation, ...

• Black destroyed one point of White's territory at the upper edge.
• White destroyed one point of Black's territory in the left centre.
• White got an additional two points of territory in the left centre.
• Black captured White's stone in the upper right, so gaining two points.
• Black destroyed one point of White's territory in the right centre.

In total, Black gained one point.

White + 2 => White + 1

Semeai Variation:

Compared to the superordinate variation, ...

• Black destroyed one point of White's territory at the upper edge.
• White destroyed one point of Black's territory in the left centre.
• White got an additional two points of territory in the left centre.
• White captured one Black stone more in the upper right, so gaining two points.
• Black destroyed one point of White's territory in the upper right corner.

In total, Black lost three points.

Black + 4 => Black + 1