(Referenced by 748; 769; 801)

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This oki was rediscovered by Joachim Meinhardt, and is decisive!

Joachim remembered that Fujisawa Hideyuki 9p has used this move (and the ensuing sequence in the lower right corner) for a variation of a semeai that started much earlier ( 519).

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Black does not have any other choice, and will end in gote.

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The further endgame on the left side is taken from the goproblems.com's main line (for its Semeai Variation).

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We now start to take White's stones in the hanezeki off the board.

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Please note that Black's large group has sufficient liberties to connect White's atari, and so to save Black's single stone .

Black wins by two points.

White has gained one point by using Joachim's new sequence. Taking the missing 71st black stone into account, Joachim now has reached an ideal result: Black wins by one point, the smallest margin possible.

Very surprisingly, it seems to have become evident that Fujisawa cannot have considered Joachim's late oki.