: ( 58dr)
Black gives atari at White's two stones from the left.

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White captures at the bottom, in sente.

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Thereafter, she connects her two stones in the left centre.

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Black secures independent life in the lower left corner, also threatening to capture White's three stones in the corner.

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White is forced to give atari at the nakade.

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Black captures White's single stone in the right centre.

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White plays the central attachment in the left centre.

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It is best for Black to capture White's single stone at the top.

He would lose one point overall unnecessarily, if he mistakenly played the atari of in the left centre in order to destroy White's potential territory there.

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

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Black pushes at the top.

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Black is able to connect at the upper edge.

Black plays 1/1 reduction.

Capture Variation:

Compared to the superordinate variation, ...

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

In total, gains and losses compensate for each other.

White + 1 => White + 1

Semeai Variation:

Compared to the superordinate variation, ...

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

In total, gains and losses compensate for each other.

Black + 1 => Black + 1