: ( 83)
White starts the ko-fight extremely "early" (but could have done so later).

!!! Throughout this sub-variation White will do without a protective move in the nakade on the left side. !!!

Ko: ; ; ;

:
So Black sets his hopes on further occupying liberties of White's centre group.

Ko: ; ; ; ; ; ; ; ; ; ; ;

Ko: ; ; ; ; ;

:
This move finally reduces Black's group below the Punishment Semeai Liberty Level.

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So Black is forced to connect the hanezeki's tail.

:
White re-captures the ko, and Black has no valid ko-threat left but his suicidal one in the hanezeki ().

Black's potential ko-threats , and , in the nakade, have become useless now. White would answer at , let Black re-capture the ko, and thereafter win the semeai with Black's connected group on the lower edge.

The atari of on the upper edge will not help Black either. White's centre group has four liberties left, so White will connect the ko, but Black will still be unable to give atari on White's centre group.

:
White wins the semeai with Black's connected group on the bottom by one move.

Please note that two of the four ko-threats ( - ) that Black initially played in the upper right are compensated for by the two unused potential ko-threats in the nakade (, ). Had White started the ko later - after some mutual occupation of liberties - even more potential ko-threats in the nakade would remain unused. This means that the potential ko-threats in the upper right, and in the nakade, cannot be considered independently.