: ( 2032a)
Apparently being unaware of the hidden weakness of Black's upper left corner (which was only uncovered by KataGo), Michael Redmond recommended the solid connection at .

Please note that this move does not lose a tempo in the Main Semeai.

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Black must follow White with the Main Semeai.

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White starts the reduction of Black's upper left corner with Yamada Shinji's Tsuke, ...

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... followed by KataGo's Immediate Crosscut.

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KataGo likes to solidify White's upper right corner in between.

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White continues in the upper left corner.

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White's hasami-tsuke starts the reduction of Black's lower left corner.

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The Main Semeai continues.

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Sooner or later, KataGo will play the remaining kikashi at the left side of the board.

Black must not play any reduction.

After her decision point, White will connect her single stone at the upper edge with . Thereafter, Black will push with at the top, forcing White to answer at .

Capture Variation:

Compared to the superordinate variation, ...

• Black's cumulated gain in the upper left corner is two points.
• White got an additional three points of territory at the upper edge.
• Black destroyed two point of White's territory at the top.

In total, White lost one point.

White + 2 => White + 1

Semeai Variation:

Compared to the superordinate variation, ...

• Black's cumulated gain in the upper left corner is two points.
• White got an additional three points of territory at the upper edge.
• Black destroyed two point of White's territory at the top.
• Black captured one White stone less at the left edge, so losing two points.

In total, White gained one point.

Black + 1 => Jigo

2032a