: ( 648gc)
Black gives atari in the hanezeki.

:
White must connect.

:
Black has to take White's upper group in the hanezeki a liberty.

Otherwise, White would capture Black's stones below by giving atari at .

Black must not play any reduction.

Capture Variation:

Compared to the superordinate variation ...

• White got an additional point of territory in the upper right corner.

Black's disadvantage in the Capture Variation is one point.

White + 1 => White + 2

Semeai Variation:

Compared to the superordinate variation ...

• White captured one Black stone less in the upper right corner, so losing one point.
• White did not get one point of territory in the hanezeki.

In total, Black's advantage in the Semeai Variation is two points.

Jigo => Black + 2