: ( 649ae)
Black captures White's single stone in the right centre.

Please be aware that KataGo's favourite line of play does not care about the final score of the alternative Main Variation, but has the overall result of the game in mind only.

:
It is best for White to play her kikashi in the lower left corner "early".

:
Black does not have a sure eye in the left centre yet, so he is forced to answer from below.

: ( 128 649ag)
KataGo favours playing the second kikashi in the lower left corner immediately.

However, White would achieve a better score in the Semeai Variation, if the played the wedge in the left centre just now.

: ( A 649ai)
KataGo favours connecting at the lower edge.

However, Black would achieve a better score in the Semeai Variation, if he played tenuki to defend his position in the left centre.

:
We chose to play the wede in the left centre just now.

KataGo favours capturing the nakade with before, which will result in a change in the order of moves only, if White continues with the central attachment in the left centre later, but deprives White of her chances to win Dany's Ko (after Dany's attachment).

:
KataGo likes to play this atari in the left centre "early", although a potential ko threat is lost.

: ( 136 649aj)
KataGo favours the central attachment in the left centre.

Here, after B's mistake with connecting at the lower edge, Dany's Ko will be better for White than the central attachment - in the alternative Main Variation (i.e. the Semeai Variation here) again.
The overall result of the game will not be affected, as White will win the ko fight in the left centre.

We can clearly see that - as usual - KataGo does not care about that secondary score.

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

:
Black further reduces White's territory at the upper edge in return.

:
The Main Semeai continues.

Black plays 2/2 reductions.

Before the end of the game, Black will have to capture at in the lower left corner.

Capture Variation:

Compared to the super³ordinate variation ...

• Black destroyed one point of White's territory at the top.
• Black did not get any territory in the left centre, so losing two points.
• White got an additional two points of territory there.
• Black's cumulated loss in the lower left corner is two points.
• White did not capture Black's stone in the lower left, so losing two points.
• Black's cumulated gain in the right centre is three points.

In total, gains and losses compensate for each other.

White + 2 => White + 2

Semeai Variation:

Compared to the super³ordinate variation ...

• Black destroyed one point of White's territory at the top.
• Black did not get any territory in the left centre, so losing two points.
• White got an additional two points of territory there.
• In the lower left corner, Black lost three points of territory, but captured an additional two White stones, so the net effect is zero.
• White captured an additional two Black stones at the right, so gaining four points.
• White lost one point of territory in the upper right corner.

In total, Black lost six points.

Black + 6 => Jigo