(Referenced by 222bv; 222bv)

: ( 222gn)
White extends into Black's corner.

( B 222gp ;  C 222gr)
Black captures White's two stones at the top.
Please note that this move is favoured by KataGo (2020) independent of the (reverse) komi, quite obviously due to some later miscalculations.

Extending to , instead, would revert to the sequence below.

However, we found that it would be better for Black to give atari at White's single stone in his corner first, with a move at .
Please note that KataGo (2021i) found an improvement in the subsequent sequence below, resulting in the same final score as with choosing this atari.

Jumping to at the second line is another idea, but slightly worse than .

: (A 222gs)
White continues with the attack in Black's upper left corner.

Capturing the nakade with , instead, would be too late now. The window of opportunity has closed.

: ( 110 222gt ;  111 222gu)
Black connects solidly at the top, securing a second eye at the upper edge.

Black's solid connection at the top, securing a second eye there, was once favoured by KataGo (2020).

However, KataGo (2021i) found that immediately connecting his partial groups in the upper left corner with would be better.

A move at , instead, seems to have a stronger effect on White's centre group, while also securing Black's connection in the corner. However, as it will turn out, it is slightly worse than the alternative subvariation.

:
Black simply connects after White's atari.

He will be unable to fight - and win - the ko after giving counter-atari with .

: (A 222gv ;  B 222gw ;  C 222gx ; : D 222gz)
White connects her single stone in the right centre, but which is a grave mistake.

For a more detailed analysis, please see the comparable position after the capture of the nakade ( 222hs).

This connection in the upper right is preferred by KataGo (2020) with komi = 1 and also with komi = 0.

The order of subvariations follows the preferences of KataGo (2020) when increasing the reverse komi.

Connecting at in the upper left corner is even worse for her, resulting in a Black win.

White's best option here is the peep at at the upper edge. It follows a more or less "peaceful" sequence that results in a convincing White win.

Both ko fight options in the upper left corner are not as good as in the comparable lines where the nakade has been already captured, due to the potential shortage of liberties around her still separated groups at the left side of the board.
Playing the hane at is bit worse than pushing with . The latter move will have the same final score as the peep at .

:
Black's sente push at the top is decisive for frustrating White's hopes to win the game.

:
White has to be patient here. She must answer Black's push with the solid connection at .

:
It is best for White to connect.

:
Black closes his upper left corner, also occupying a liberty of White's group at the left.

:
White's hane in the corner destroys two points of Black's territory, in sente, but is not enough to turn the tables.

:
The Main Semeai continues.

Black must not play any reduction.

:
This move starts the endgame at the left side of the board.

White might also wait until after her decision point.

Capture Variation:

Compared to the super²ordinate variation ...

• White's cumulated gain in the upper left corner is 13 points.
• Black's cumulated gain in the upper left corner and the top is 19 points.
• Black got an additional point of territory in the left centre.
• White destroyed three points of Black's territory in the lower left corner.
• Black captured White's two stones in the lower left, so gaining four points.
• White's cumulated gain at the right side is six points.

In total, White lost three points.

White + 3 => Jigo