: ( 58br)
Black defends in the left centre.

:
White's placement starts the attack at Black's upper left corner.

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Attaching at the upper 1-2-point seems best for Black.

:
White must connect her stones, also giving atari at Black's just played stones.

:
Black gives counter-atari.

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The ko-fight in the upper left corner begins.

Please note that it is an approach-move ko, favouring Black - in principle.

:
Black connects at the left edge.

:
White occupies an outside liberty of Black's group.

:
Black recaptures the ko.

Ko: ;

:
The ko fight continues with White utilising her ko threats a the left side of the board first.

:
Black attacks White's upper left corner.

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But White ignores Black's previous move and occupies the next outside liberty (an approach-move one here) of Black's group.

:
Black recaptures the ko.

:
White captures the hanezeki's tail as a ko threat.

:
Black has to recapture, of course.


:
White recaptures the ko.

:
Black erases several White ko threats in the lower right corner.

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White returns the favour in the upper right corner.

Ko: ;

:
Again, Black does not have a really forcing attack at White's upper right corner.

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White occupies Black's last outside liberty, finally turning the ko into a direct one.

:
White has this suicidal ko threat in the hanezeki at her hands.

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Black must capture, as his own stones are in atari.

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Black atari does not contain a game-deciding threat.

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White captures Black's group in the upper left corner, so ending the ko fight.

:
Black starts the further endgame.

White wins the game by 17 points.