: ( 222ej)
Black's push in the upper right will benefit him territorially.

:
White blocks immediately.

She could simplify the issue by connecting at .

:
Black pushes for a second time.

:
White blocks again, creating a ko shape.

As two moves before, she could simplify the game by connecting at immediately.

:
In order to simplify the presentation, we continue with the Main Semeai here.

As a matter of course, Black could also start the ko at right with , but which would not affect the final result of the game.

You will find an explanation of the succeeding ko fight 222aw.

:
White captures Black's two stones that he had not connected initially.

:
Black recaptures.

:
White has to connect the ko - sooner or later.

White lost three points of territory in this area, but Black only one tempo in the Main Semeai. The net gain of Black's manoeuvre is two points.

Black must not play any reduction.

Capture Variation:

Compared to the superordinate variation ...

• The net effect of Black's reduction of White's territory in the upper right corner is two points.
• White's cumulated gain in the upper left corner is one point.

In total, Black gained one point.

White + 2 => White + 1

Semeai Variation:

Compared to the superordinate variation ...

• Black destroyed three points of White's territory in the upper right corner.
• White captured one Black stone more in the upper right, so gaining three points.
• White's cumulated gain in the upper left corner is one point.

In total, Black lost one point.

White + 1 => White + 2