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

: ( A 58dk)
Defending at the top was our first idea.

However, as we found later, blocking at at the upper edge would have been one point better overall.

:
White gives atari, so strengthening her shape at the top, ...

:
... before starting to reduce Black's corner territory in sente.

:
White continues with her kikashi in the lower left corner.

:
The Main Semeai continues.

Black must not play any reduction.

:
White will start this sequence after her decision point.

Capture Variation:

Compared to the superordinate variation, ...

• Black's cumulated gain at the top is three points.
• Black got an additional three points of territory in the left centre.
• Black did not capture White's single stone in the right centre, so losing two points.
• Black did not destroy three points of White's territory in the upper right.
• White captured Black's stone in the lower right, so gaining one point.

In total, White gained one point.

White + 1 => White + 2

Semeai Variation:

Compared to the superordinate variation, ...

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

In total, White lost five points.

White + 1 => Black + 4