RTG Problem 12 / Solution
The status of the Black group is that the group is already dead.
If here, then plays at the same point.
The hane at is interesting. If is played wrongly, it can lead to a favorable approach ko. With the correct move, Black dies.
is a careless move, which gives a chance to live by an approach ko.
makes an eye in the corner, but destroys the eye on the edge.
Playing at the 1-2 point does not work here, makes and miai for the kill.