: ( 648fi)
Black continues with the ko fight immediately by playing his kikashi in the hanezeki.

Ko:

:
White has to answer locally.

:
Black recaptures the ko.

:
White uses the continuation of the Nakade Sequence as an additional ko threat.

:
White recaptures the ko.

Hereafter, both sides follow the course of the super²ordinate variation, but with the parity of their ko threats changed.

Ko:

///:

:
Black plays his last ko effective ko threat.

He might even do without, achieving the same final scores as here.

:
Now, it is White who has the last effective ko threat.

:
Black continues with the Main Semeai.

:
White connects the ko.

Black plays 2/3 reductions.

Capture Variation:

Compared to the super²ordinate variation ...

• Black did not capture one White stone in the left centre, so losing one point.
• Black did not get any territory there, so losing one point.
• Black did not destroy one point of White's territory at the upper edge.
• White did not capture Black's stone in the lower right, so losing two points.

In total, Black lost one point.

White + 1 => White + 2

Semeai Variation:

Compared to the super²ordinate variation ...

• Black did not capture one White stone in the left centre, so losing one point.
• Black did not get any territory there, so losing one point.
• White captured one Black stone less at the upper edge, so losing one point.
• White captured an additional Black stone in the lower right, so gaining two points.

In total, Black lost three points.

Black + 1 => White + 2