: ( 58ar)
White connects her single stone in the right centre.

: (148 58az)
Black must defend his potential territory in the left centre.

If he played the descent to the upper edge with , instead, he would lose one point overall unnecessarily.

:
The Main Semeai continues.

Black plays 2/2 reductions.

Before the end of the game, Black will have to connect at .

Capture Variation:

Compared to the superordinate variation, ...

• White destroyed one point of Black's territory in the upper left corner.
• White's cumulated gain at the upper edge is two points.
• Black's cumulated gain in the left centre is four points.
• Black did not capture White's stone in the upper right, so losing two points.
• White got an additional point of territory in the right centre,

In total, gains and losses compensate for each other.

White + 1 => White + 1

Semeai Variation:

Compared to the superordinate variation, ...

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

In total, White gained two points.

Black + 5 => Black + 3