: ( 548kba)
White continues in the top left corner with Yamada Shinji's tsuke.

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This is the earliest moment when Black is able to capture what seems to be a ko.

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White uses this internal ko threat.

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Black must save his two endangered stones.

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Black might even threaten to live independently in the top right, but ...

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... White will not answer any Black move. She simply connects at , instead, threatening to kill Black's entire left side by connecting at .

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Now, White answers "delayed" in the top right.

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Black continues following a well-known sequence.

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In principle, we have reached a change in the order of moves with the 2020 solution.

Please note that Black has already played one (of two possible) reductions in the upper right corner here.
The marked exchange in the lower left corner does not affect the game's result.

The final scores of the game will become
White + 2 / Black + 4.