: ( 222ab)
White starts the endgame in the lower left corner.

:
Here, it is best for Black to tenuki for an advantageous move at the top.

:
White could play this exchange at the top also after her decision point.

:
The Main Semeai continues.

Black must not play any reduction.

White will connect at after her decision point.

Capture Variation:

Compared to the superordinate variation ...

• Black's cumulated gain in the upper left corner is two points.
• Black destroyed two points of White's territory at the top.
• White captured Black's stone in the lower left, so gaining two points.

In total, White lost two points.

White + 5 => White + 3

Semeai Variation:

Compared to the superordinate variation ...

• Black's cumulated gain in the upper left corner is two points.
• Black destroyed two points of White's territory at the top.
• White captured Black's stone in the lower left, so gaining two points.

In total, White lost two points.

Black + 6 => Black + 8