: ( 58dh)
White pushes at the left edge, attacking Black's corner, so starting with the reduction of Black's potential territory.

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This connection ends the first series of White's destructive moves.

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Thereafter, Black starts reducing White's territories in the upper right, seeking for compensation.

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Alternatively, White could block at .

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Black pushes for another time at the top.

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White's second push in the lower left corner is absolute sente, threatening to kill Black's entire group.

Black plays 2/3 reductions.

Capture Variation:

Compared to the superordinate variation, ...

• White destroyed eight points of Black's territory at the left side of the board.
• Black destroyed six point of White's territory in the upper right.
• White did not capture Black's stone in the lower right, so losing two points.

In total, gains and losses compensate for each other.

White + 2 => White + 2

Semeai Variation:

Compared to the superordinate variation, ...

• White destroyed four point of Black's territory at the left side of the board.
• Black captured eight White stones more at the left, so gaining twelve points.
• White captured seven Black stones more at the right side of the board, so gaining eight points.

In total, gains and losses compensate for each other.

Jigo => Jigo