: ( 222jw)
White simply continues with the Main Semeai, without touching Black's lower left corner.

:
Black continues in the lower left corner.

Black must not play any reduction.

After her decision point, White will block at at the upper edge.

Capture Variation:

Compared to the superordinate variation ...

• Black did not destroy one point of White's territory at the top.
• Black's cumulated gain in the lower left corner is two points.
• Black did not destroy one point of White's territory in the upper right corner.

In total, gains and losses compensate for each other.

White + 4 => White + 4

Semeai Variation:

Compared to the superordinate variation ...

• Black did not destroy one point of White's territory at the top.
• White's cumulated gain in the lower left corner is one point.
• Black captured one White stone less in the lower left corner, so losing two points.
• White captured one Black stone less in the upper right corner, so losing one point.

In total, White gained three points.

Black + 10 => Black + 7