: ( 648eb)
Black uses his kikashi in the hanezeki as a ko threat.

Ko: ; ; ; ;

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White must answer locally.

It might be tempting, but White must not push at , instead, in an attempt to exploit Black's shortage of liberties at the left edge. She would lose the game outright.

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The same is true for Black's next ko threat.

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Alternatively, White might insert her kikashi in the lower left corner after Black's connection at .

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Eventually, Black has to erase his shortage of liberties at the left by connecting.

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White connects her single stone at the upper edge.

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Black occupies one of White's approach-move liberties at the left, because White would win the ko in the left centre anyway.

White is barely ahead in ko threats (, , 4 x vs. 5 x ).

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White has to connect the ko.

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The Main Semeai continues.

Black plays 3/4 reductions.

Later, White will play her kikashi , in the lower left corner. Black has to capture at before the end of the game.

Capture Variation:

Compared to the superordinate variation ...

• White's total gain at the upper edge is two points.
• Black destroyed one point of White's territory at the top.

In total, White gained one point.

White + 1 => White + 2

Semeai Variation:

Compared to the superordinate variation ...

• White's total gain at the upper edge is two points.
• Black destroyed one point of White's territory at the top.

In total, White gained one point.

White + 1 => White + 2