: ( 58aa)
Black follows Joachim's idea and gives atari at White's stone at the outside.

We inserted this alternative move manually. The sequence below shows KataGo's favoured continuation (in "Analysis Mode").

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As a matter of course, White gives counter-atari.

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Black has to capture.

He is unable to connect at , instead.

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White gives another atari immediately.

Alternatively, she could have connected at first.

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Here, KataGo chose the atari in the corner, instead of the "usual" hane at , which would also be possible here.

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Again, KataGo did not play at , so giving atari at White's five stones, but connected solidly in the corner.
It will result a change in the order of moves.

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Black has just defended his weakness in the upper left corner, so White has to push at the left edge.

This move destroys two points of Black's territory, but does not lose a tempo in the Main Semeai, as it created an approach-move liberty at .

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Black gives atari at White's two stones in the lower left.

KataGo also considered (CHITOOM).

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KataGo likes to insert this kikashi.

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White starts the reduction of Black's lower left corner.

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Another kikashi that is inserted in-between.

: (122 58eh)
White follows a smooth path be connecting her single stone in the right centre.

Immediately connecting at in the lower left corner, instead, was possible for White, but would complicate the game unnecessarily.

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It is best for Black to capture White's two stones in the lower left.

He is still par with the Punishment Semeai Liberty Level, and so is unable to capture at , instead.

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Now, White can continue at the bottom.

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White's previous move lost a tempo in the Main Semeai, in principle, so Black is able to insert this kikashi of his own.

He might consider playing the throw-in at first (White will capture at ), but which will have no effect, as White has already connected at , so destroying Black's potential option for the Central Semeai.

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Finally, Black answers White's earlier atari.

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White continues with the wedge in the left centre.

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White plays KataGo's bad-shape move in the left centre.

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Black defends at the top.

Alternatively, he might consider connecting at , not affecting the final scores of the game. These two moves are miai.

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White prepares the scene for creating some points of territory in the left centre, compensating for Black's gain at the top.

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The Main Semeai continues.

Black must not play any reduction.

White will play this sequence after her decision point.

Capture Variation:

Compared to the superordinate variation, ...

• White's cumulated gain in the upper left corner is seven points.
• Black's cumulated gain at the top is four points.
• White's cumulated gain in the left centre is three points.
• White did not capture Black's stone in the lower left, so losing two points.
• Black did not destroy one point of White's territory in the right centre.
• Black captured White's two stones in the lower left, so gaining four points.

In total, Black lost one point.

White + 2 => White + 3

Semeai Variation:

Compared to the superordinate variation, ...

• White's cumulated gain in the upper left corner is seven points.
• Black's cumulated gain at the top is four points.
• White's cumulated gain in the left centre is three points.
• Black did not destroy one point of White's territory in the right centre.
• White did not capture Black's stone in the lower left, so losing two points.
• Black did not destroy one point of White's territory in the right centre.
• Black captured one White stone more in the upper left, but one White stone less in the lower left, so the net effect is zero.
• White captured one Black stone less in the right centre, so losing two points.

In total, Black lost three points.

Black + 4 => Black + 1