: ( 2043e)
Black descends to the upper edge.

:
White's early atari is necessary, as her three stones to the left will become capture later.

:
The Main Semeai continues.

Black must not play any reduction.

:
After her decision point, White will give atari in the left centre.

:
Black has to connect.

:
White establishes one point of territory in the left centre.

:
Black destroys one point of White's territory at the upper edge in return.

Capture Variation:

Compared to the superordinate variation, ...

• Black's cumulated gain at the upper edge is three points.
• White destroyed one point of Black's territory in the left centre.
• White got an additional point of territory in this area.
• White got an additional point of territory in the right centre.

In total, gains and losses compensate for each other.

Jigo => Jigo

Semeai Variation:

Compared to the superordinate variation, ...

• Black's cumulated gain at the upper edge is three points.
• White destroyed one point of Black's territory in the left centre.
• White got an additional point of territory in this area.
• White captured one Black stone less in the right centre, so losing one point.

In total, Black gained two points.

Jigo => Black + 2

2043e