: ( 318)

It may be tempting to play here, but it is not correct technically. This is also shown in the theory chapter as FLAG 8a2 ( 1043).

:
Black throws in, and White will lose more than only one liberty by her forced move at .

:
Black can capture White's stone, before connecting the hanezeki's tail.

Ko:

:
Black continues taking shared liberties.

Ko: ;

:
White's fate now depends on all of her "real" (internal) ko-threats in the top left corner to prevent a Black move at . White loses a liberty by Black's answer, so her net advantage on the left side of the board is three ko-threats.

:
This move guarantees Black two ko-threats in this area.

Ko:

:
Connecting at , instead, would provide Black with a third, and additional, ko-threat (at , after , ).

Ko: ;

:
White captures the ko for the last time, and wins the game.
However, seen overall, White encountered unnecessary, and avoidable, complications in the process shown here. She simply should have played (= ) at .