(Referenced by 222gv)

: ( 222gn)
White connects in the upper left corner.
This move is favoured by KataGo (2020) with komi = 0.

White's connection does not lose a tempo in the Main Semeai, as it creates an approach-move liberty for her left-hand group.

: (A 222ib)
It is correct for Black to immediately block White's access to the corner.

KataGo (2020) favours Black's block at , instead, but which seems to be driven by wishful thinking.

Please note that Black must not capture White's stones (e.g. wth ), as this would push him below the Punishment Semeai Liberty Level.

: (123 222ic ; C 222id)
White connects her single stone in the upper right, so continuing with the Main Semeai.

Defending her territory at the top with , instead, is a grave mistake.

Playing the peep of at the upper edge, however, is also feasible and will result in a change in the order of moves.

: (A 222ie)
Black is able to push twice at the top, in sente. But he has to take his opportunity just now.

Blocking at , instead, is a mistake, obviously triggered by wishful thinking.
Thereafter, White would continue with the Main Semeai, choosing moves that defend against the Central Semeai while occupying liberties of Black's right-hand group.

(125 222if)
White has to be patient here. She must answer Black's push by the solid connection at .

White is unable to capture Black's cut-off stones in the upper left corner. Thus, the semeai with her centre group has become a valid threat.
Blocking at , instead, is too reckless now.

:
The Main Semeai continues.

:
White starts the endgame on the left side "early".

:
Black simply connects.

Capturing White's single stone at the top, instead, would not affect the final score. These two moves are miai.

Black must not play any reduction.

Capture Variation:

Compared to the super²ordinate variation ...

• White's cumulated gain in the upper left corner is eleven points.
• Black's cumulated gain at the top and in the upper left corner is 20 points.
• Black got an additional point of territory in the left centre.
• White destroyed three points of Black's territory in the lower left corner.
• Black captured an additional two White stones in the lower left, so gaining four points.
• White's cumulated gain at the right side of the board is six points.

In total, White lost five points.

White + 3 => Black + 2