: ( 648kw)
White captures the nakade as a ko threat.

In this subvariation, White intends to play the atari in the left centre as late as possible.

Ko: ; ; ; ; ; ; ; ; ; ; ; ;

:
The ko fight continues.

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White inserts her kikashi in the lower left corner.

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Black has to erase his shortage of liberties at the left latest now.

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White connects her single stone at the upper edge in return.

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The ko fight continues.

: (A 648md)
This is the latest moment when White has to play the atari as a ko threat.

She must not play the peep of before.

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Black simply connects.

Connecting at , instead, will not affect the final scores.

:
Black is not only behind in ko threats ( vs. 2 x ) - and so will lose the ko fight - but his only remaining ko threat in the upper right is disadvantageous, losing one point overall, so he continues with the Main Semeai.

:
White connects the ko.

Black plays 1/2 reductions.

Later, White will play her kikashi , in the lower left corner, so that Black must capture with before the end of the game.

Capture Variation:

Compared to the superordinate variation ...

• Black destroyed an additional three points of White's territory at the top.
• White destroyed one point of Black's territory in the upper left corner.
• White capture 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 the superordinate variation ...

• White captured an additional three Black stones at the top, so gaining three points.
• Black captured an additional White stone in the upper left corner, so gaining one point.
• White captured one Black stone less in the lower right, so losing two points.

In total, gains and losses compensate for each other.

White + 2 => White + 2