Referenced by ( 1813), ( 2022MainLine)

: ( 1863)
Black plays my Guzumi.

We inserted this move manually.

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White extends to the left from her four stones at the bottom.

KataGo originally preferred (regularly ending with a White two-point win), but has been chosen manually here, because this move was better for White in the scenario with the upper right corner already played out.

We used komi = -1.5 in the self-play game that is displayed below.

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Black plays Harry's Hasami-Tsuke immediately.

He does neither precede it with the "classical" push at nor does he secure immediate life for his large group by capturing White's single stone at the right with , instead.

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White makes sure that her stones at the left cannot be captured easily.

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Black starts saving his nakade stones.

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Black ends in gote in the lower left, of course.

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White continues at the upper edge, capturing Black's single stone there.

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Black blocks his upper left corner.

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White pulls her hasami-tsuke stone out, ...

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... before blocking at :

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Black has to capture White's single stone in the upper right now, securing independent life for his large group.

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White's atari in the Guzumi Area could be played at any time, in principle.

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White blocks the top.

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Black proceeds further into White's potential territory at the top.

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White's attachment in the left centre threatens to capture Black's two stones to the left.

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White's atari at the top will result in a ko-shape.

Ko:

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Black recaptures the ko.

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Black plays a protective move inside his upper left corner.

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White chooses this hasami-tsuke to further proceed into Black's corner.

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Black connects immediately.

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White attacks Black's potential territory in the lower left corner, creating territory of her own in the process.

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Black extends to the right.

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White takes some profit at the lower edge.

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Black proceeds further into White's potential territory at the top in return.

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White connects along the upper edge, ...

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... before further wrecking Black's lower left corner territory.

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Black seeks compensation at the top.

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White starts the creation of territory in the centre, capturing Black's single stone to the right.

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White secures her territory at the top.

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White's hane at the left edge reduces Black's upper left corner a bit.

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Black reduces White's centre territory from the right.

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Black's peep destroys potential White territory in the upper left corner.

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White continues with the mutual reduction of opponent's territories in the lower left.

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The small endgame continues.

Territory:

Black:

• 21 points in the upper left corner.
• Four points in the upper right.
• Six points in the left centre.
• Six points in the lower left corner.

= 37 points in total.

White:

• Two points in the hanezeki.
• Four points at the left side and the upper left corner.
• Seven points at the lower edge.
• 18 points at the top and in the centre.
• Eight points in the upper right corner.

= 39 points in total on the board.

White wins the game by three points.