: ( 313)
Black plays sagari, so pre-empting a White hane on the upper edge. This hane would create an additional ko-shape, favouring White ( 1141), because Black cannot build a larger eye in the centre any more. This is also shown in the theory chapter as FLAG 8c ( 1047).

: (111 319)
White must be careful here not to lose liberties unnecessarily, while pre-empting Black's second ko-shape in the centre.

This solid move in the centre is safe now, because Black has lost a liberty by playing already.

Ko: ; ;

:
White does not need to rely on her ko-threats in the upper left, which would have started earlier, with a move at .

:
White captures the ko for the last time. Black cannot give atari at , and also has no internal ko-threats any more. So White will connect the ko, and win the game.