: ( 2022MainLine)
Black tries to resist, aiming at capturing White's just played stone.

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White extends into the corner.

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Black must connect.

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KataGo likes to capture Black's nakade "early".

This capture erases all potential shortage of liberties for her upper stones at the left.

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This second extension into Black's corner starts one of several variations that are provided by KataGo.

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Black securely connects his stones, also aiming at reducing White's potential eye space in the corner.

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White connects her stones diagonally.

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Black's jump into the corner again aims at reducing White's eye space.

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But White's push to the left creates several cutting points in Black's formation at the left edge.

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White's throw-in is essential for making it difficult for Black to approach her intruders from the left.

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White solidly connects in the corner.

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Black must establish an eye for his own group.

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Black's previous move weakend White's formation at the top, so she continues with the Main Semeai for a while, therewith erasing Black's hopes on attacking her centre group.

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As a matter of course, White does not connect her two stones in atari in the lower left, in order to keep Black par with the Punishment Semeai Liberty Level.

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White returns to the upper left corner with this descent to the upper edge, securing an eye for her group.

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She can do so in sente, because Black is forced to defend against his threatening shortage of liberties at the left edge.

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White's push at the left edge is sente as well.
This move gains some point of profit, while not losing a tempo in the Main Semeai.

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Black must connect.

Again, there was a shortage of liberties lurking around the corner.

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White's hane prepares for a ko-shape at the upper edge.

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Black is forced to block.

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This move secures an eye to the left, and finishes the ko-shape to the right.

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Black takes a little profit in-between.

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Black continues with the Main Semeai.

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Black captures into the ko-shape at the upper edge.

: ( 136 2022d)
Black gives atari at White's left-hand group, aiming at an approach-move ko in the upper left corner.

He would enhance the final score of the game by 15 points in his favour, if he connected the ko with a move at , instead.

Ko: ; ;

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Black does not have any "really threatening" ko-threat.

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White occupies one of the liberties of Black's group.

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Again, Black can do nothing more but to take some profit.

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White occupies one of the shared liberties.

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The time has come to capture the hanezeki's tail as a ko-threat.

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Black must recapture, of course.

Ko: ; ; ; ;

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White continues with the ko-fight in the upper left corner.

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White ignores Black's previous atari in the upper right corner, in order to occupy the last shared liberty in the upper left corner, so turning the ko into a direct one.

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White answers Black's ko-threat.

It does not make sense for White to ignore this atari and end the ko-fight in the upper left corner by capturing with .
Another ko-fight would erase in the upper right corner in return after Black captured there with .

Ko: ;

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Black's oki is mandatory.

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Black does not have any valid ko-threat left.

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White terminates the ko-fight by capturing Black's group in the upper left corner.

White will win the game by 52 points.

2022MainLine