: ( 548kl)
Black connects in the lower left corner, continuing with the Main Semeai.

:
White's move threatens the throw-in at , so Black has to connect solidly.

:
White gains two points at the upper edge by connecting, letting Black destroy her potential two-point territory in the centre in retun.

, :
Black is able to destroy three points of White's potential territory in the upper right.

Capture Variation:

Compared to the superordinate variation, ...

• Black's cumulated gain in the lower left corner is two points.
• White's cumulated gain in the upper left is three points.
• White did not get two points of territory in the centre.
• White got one point of territory at the upper edge.

In total, gains and losses compensate for each other.

White + 1 => White + 1

Semeai Variation:

Compared to the superordinate variation, ...

• Black's cumulated gain in the lower left corner is two points.
• White's cumulated gain in the upper left is three points.
• White did not get two points of territory in the centre.
• White did not caputure a Black stone at the upper edge, so losing one point.
• Black did not get one point of territory in the centre.
• Black captured one White stone less in the lower left corner, so losing two points.

In total, gains and losses compensate for each other.

White + 1 => White + 1