: ( 58aa)
White gives atari at Black's nakade stones.

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

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

KataGo also considered , which would torpedo Joachim's idea of giving atari at , if White continued with the crosscut of immediately.

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White connects her two stones immediately.

KataGo also considered (CHITOOM), capturing the nakade as early as possible.

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Black closes the border of his territory in the upper left cenre.

KataGo also considered for defending his weakness in the left centre.

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White captures the nakade.

KataGo also considered (CHITOOM).

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KataGo seems to like this continuation.

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KataGo also seems to like playing White's wedge in the left centre as a kikashi in-between.

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KataGo continues with the crosscut in the upper left corner.

KataGo also considered and (both CHITOOM).

(Referenced by 58aa)

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KataGo follows Joachim's idea of playing the atari at the outside (instead of the "usual" from the inside).

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White completes the Nakade Sequence.

KataGo also considered (CHITOOM).

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White connects in the corner.

KataGo also considered (CHITOOM).

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White inserts this kikashi in the left centre.

KataGo also considered (CHITOOM).

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White gives the second atari in the left centre.

KataGo also considered (CHITOOM).

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Black defends his territory in the lower left corner.

KataGo also considered (CHITOOM).

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White starts reducing Black's territory in the lower left corner from the left.
KataGo seems to like this kind of reduction, but which is not really effective, especially because Black can counter at the right.

KataGo also considered and (both CHITOOM).

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KataGo plays this kikashi at the upper edge.

KataGo also considered (CHITOOM).

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White answers with a kikashi of her own.

KataGo also considered (CHITOOM).

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White's second push in the lower left is absolute sente, as it threatens to kill Black's entire group.

KataGo also considered .

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White plays another reduction in sente.

KataGo also considered .

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White's push at the left edge is also sente.

KataGo also considered .

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Finally, White has to connect in the upper right, stopping Black from capturing some of her stones there.

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Black uses the opportunity to capture White's single stone in the upper right centre.

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

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Black answers with KataGo's solid connection.

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White's hane destroys Black territory outside the Main Semeai area, and so benefits White in the Semeai Variation.

KataGo also considered (CHITOOM).

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Black continues with the Main Semeai.

KataGo also considered and (CHITOOM).

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White creates a cutting point in Black's formation, forcing Black to add a defensive move - sooner or later.

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Black defends immediately here.

If Black occupied White's liberties at and without such a defensive move played before, White's placement at would threaten a double snap-back (at and ).

Black plays 3/3 reductions.

Before the end of the game, Black will have to e.g. connect at , in order to protect his stones at the upper edge.

Capture Variation:

Compared to the superordinate variation, ...

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

In total, gains and losses compensate for each other.

White + 2 => White + 2

Semeai Variation:

Compared to the superordinate variation, ...

• White's cumulated gain in the upper left corner is nine points.
• Black's cumulated gain at the top is three points.
• Black's cumulated gain in the lower left corner is one point.
• Black captured four White stones more at the left, so gaining eight points.
• White captured an additional Black stone in the lower right, so gaining two points.
• White got an additional point of territory in the centre.

In total, gains and losses compensate for each other.

Black + 4 => Black + 4