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Black secures his territory at the lower left.

:
After the forcing exchange of , at the lower edge, White starts the reduction of Black's potential territory in the upper left in return.

:
White further gains by this atari.

:
White ends in gote, so ...

:
... Black can choose a simple variation with securing his three point territory in the left centre.

:
White follows the already known course of the Main Semeai.

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As a matter of course, White connects here, in order to secure her gains in the Capture Variation.

, :
Black has got a surplus of three Main Semeai Liberties, so he is able to destroy three points of potential White territory at the right.

Capture Variation:

Compared to the superordinate variation, ...

• Black's cumulated gain at the lower edge is five points (three points of territory, one non-captured stone).
• Black gained three points of territory in the left centre.
• Black did not capture White's wedging stone in the left centre, for a loss of one point.
• Black did not capture White's single stone at the top right, for a loss of two points.
• Black's cumulated loss in the upper left corner is six points.

In total, Black lost one point.

White + 1 => White + 2

Semeai Variation:

Compared to the superordinate variation, ...

• Black's cumulated gain at the lower edge is five points (three points of territory, one non-captured stone).
• Black gained three points of territory in the left centre.
• Black did not capture White's wedging stone in the left centre, for a loss of one point.
• Black did not capture White's bad-shape stone, for a loss of two points.
• Black's cumulated loss in the upper left corner is six points.
• White lost one point of territory in the upper right centre.

In total, gains and losses compensate for each other.

White + 1 => White + 1