: ( 648ir)
Black's push was mistakenly thought to be absolute sente.

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But it is not!
White plays her own forcing moves in the lower left corner, threatening to kill Black's large group at the left.

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Black secures two eyes for his group.

He is unable to continue with the atari of , instead. White will capture the hanezeki's tail with , in sente, and kill Black's group at the left with thereafter. There is nothing on the board that could compensate for Black's large loss on the left.

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Now, White answers Black's kikashi at the top.

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Black destroys White's potential territory in the left centre.

Alternatively, he might capture White's single stone at the upper edge. These two areas are miai.

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The Main Semeai continues.

Black plays 4/5 reductions.

Please assume the rejection of Dany's Sacrifice and Black's second kikashi in the hanezeki (, ) played before.

Black will capture at before the end of the game.

Capture Variation:

Compared to the superordinate variation ...

• White's cumulated gain in the lower left corner is two points.
• Black destroyed one point of White's territory at the top, so gaining one point.

In total, Black lost one point.

White + 1 => White + 2

Semeai Variation:

Compared to the superordinate variation ...

• White's cumulated gain in the lower left corner is two points.
• White captured an additional Black stone at the top, so gaining one point.
• Black captured an additional White stone in the lower left corner, so gaining two points.

In total, Black lost one point.

White + 1 => White + 2