: ( 648ac)
This move is meant to prepare for further actions below, however ...

:
Black secures an eye in the left centre.

There is no need for him to connect above, at , instead.

:
White connects her single stone at the upper edge.

:
Black's score in the Semeai Variation is too low, so he has to play his kikashi in the hanezeki "early".

:
Black starts the mutual occupation of opponent's liberties in the Main Semeai.

Black has an eye in the centre already, so it does not make any sense for White to play here.

Black plays 3/4 reductions.

Please assume the rejection of Dany's Sacrifice and Black's second kikashi in the hanezeki (, ) played before.

Capture Variation:

Compared to the superordinate variation ...

• White did not capture one Black stone in the centre, so losing one point.

White + 1 => Jigo

Semeai Variation:

Compared to the superordinate variation ...

• White did not capture one Black stone in the centre, so losing one point.

White + 1 => Jigo