( 648aa)
This is the position after , with none of the marked Black kikashi (, / , in the hanezeki / , in the lower left / , at the top) having been played yet.
Please also note that Black still has to reinforce his formation in the left centre e.g. with KataGo's solid connection at .

: (A 649ab ; B 649ac ; C 649ad)
KataGo's top favourite is the atari at White's two stones in the lower left.

Black's kikashi in the hanezeki are also considered seriously, as well as KataGo's solid connection in the left centre. All of these alternative options will result in changes in the order of moves with the best sequence below.

:
White has to connect.

: (A 649ae)
Black plays KataGo's solid connection in the left centre.

KataGo also seriously considers the atari at in the hanezeki here.
We will utilise this subvariation to explain the consequences of Joachim's tenuki (and Dany's Ko, which will follow).

:
White has to connect her single stone in the upper right.

: (A 649av ; B 649aw)
KataGo favours continuing with the upper kikashi in the hanezeki.

Seriously considered are also playing the lower kikashi in the hanezeki and capturing White's single stone at the upper edge just now. It will result changes in the order of moves with the line of play below.

:
As a matter of course, White connects.

:
Black continues with his second kikashi in the hanezeki.

: (A 649ax)
Finally, he captures White's single stone at the upper edge.

Black might insert his last kikashi at the top before.

: ( A 649ay ;  B 649az)
KataGo favours continuing with the Main Semeai here, not caring about the result of the alternative Main Variation (i.e. the Semeai Variation).

Blocking at at the top or at at the upper edge would benefit White by two points in the Semeai Variation ("correct" play for Black in the left centre provided).

Please note that Black would win the Semeai Variation by only two points, if he let White take both and . The overall result of the game (i.e. the score of the Capture Variation) would remain unaffected.

:
Black defends in the left centre, also occupying one of White's liberties at the left.

:
KataGo likes to play this move in the left center that provides Black with an additional point of territory there.

Alternatively, he might have pushed at , instead,

:
White blocks at the top.

:
Black takes the miai point at the upper edge.

:
Black is able to connect.

Black must not play any reduction.

Capture Variation:

Compared to Our Solution (2020) ...

• Black destroyed one point of White's territory at the upper edge.
• White got an additional point of territory at the top.
• Black got an additional two points of territory in the left centre.
• White captured Black's stone in the lower right, so gaining two points.

In total, gains and losses compensate for each other.

White + 2 => White + 2

Semeai Variation:

Compared to Our Solution (2020) ...

• Black destroyed one point of White's territory at the upper edge.
• White got an additional point of territory at the top.
• Black got an additional two points of territory in the left centre.
• Black captured one White stone less in the upper left, so losing two points.
• White captured one Black stone less in the lower right, so losing two points.

In total, Black gained two points.

Black + 4 => Black + 6