: ( 648mm)
White blocks at the top.

131:
Black captures White's single stone at the top in return.

:
Black connects.

Black plays 2/2 reductions.

Later, White will play her kikashi , in the lower left corner, so that Black must capture at before the end of the game.

Capture Variation:

Compared to the superordinate variation ...

• Black's cumulated gain at the upper edge is two points.
• White got an additional point of territory at the top.
• Black did not destroy one point of White's territory in the upper right corner, so losing one point.

In total, gains and losses compensate for each other.

White + 2 => White + 2

Semeai Variation:

Compared to the superordinate variation ...

• Black's cumulated gain at the upper edge is two points.
• White got an additional point of territory at the top.
• White captured one Black stone less in the upper right corner, so losing one point.

In total, White lost two points.

White + 2 => Jigo