: ( 648ky)
Again, White continues with the Main Semeai, occupying another Black liberty.

:
Black secures two points of territory in the left centre.

Black must not play any reduction.

Capture Variation:

Compared to the superordinate variation ...

• Black got an additional two points of territory in the left centre.

White lost two points.

Black + 1 => Black + 3

Semeai Variation:

Compared to the superordinate variation ...

• Black got an additional two points of territory in the left centre.
• Black captured one White stone less in the left centre, so losing two points.

In total, gains and losses compensate for each other.

Black + 1 => Black + 1