(Referenced by 222bu)

: ( 222fn)
Black connects solidly.

:
White's hasami-tsuke at the edge is a surprising submarine attack.

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Black gives atari at the edge.

Playing this move at the other side of White's intruder, at instead, would result in a change in the order of moves.

:
White gives counter-atari in the corner.

:
Black captures.

:
White plays another atari at the edge.

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Black's diagonal move defends his cutting point to the right, and attacks to the left.

:
White captures the upper ko.

:
Black has to connect the lower one, as he is unable to fight any "real" ko in this corner, due to White's unbeatable ko threats in the nakade and the hanezeki.

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It follows the "usual" endgame at the left side of the board.

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This is the newly found wedge in the left centre that will benefit White by one point.

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White plays KataGo's bad-shape move in the left centre.

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Black has to defend this cutting point - sooner or later.

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Black is still par with the Punishment Semeai Liberty Level, so White can defend her territory at the top also before her decision point, as Black does not have any option to resist.

:
Black has to add a defensive move to his corner - sooner of later.

Once Black had occupied White's liberties in the upper right (), a White move at would result in capturing Black's stones above, threatening a snap-back at the right.

Capturing the ko at the left edge with will not help Black, as he is unable to win any ko in this corner.

Black must not play any reduction.

Capture Variation:

Compared to the superordinate variation ...

• Black occupied four points of his own territory in the upper left corner.
• White provided Black with four additional prisoners there, so losing four points.
• White captured an additional Black stone at the left edge, so gaining one point.
• Black got an additional point of territory in this corner.

In total, gains and losses compensate for each other.

White + 2 => White + 2

Semeai Variation:

Compared to the superordinate variation ...

• Black occupied four points of his own territory in the upper left corner.
• White provided Black with four additional prisoners there, so losing four points.
• White captured an additional Black stone at the left edge, so gaining one point.
• Black got an additional point of territory in this corner.

In total, gains and losses compensate for each other.

Black + 3 => Black + 3