Endgame Problem 5 / Solution

Solution  

This problem has a hamete flavour, but it isn't really one. The move is the correct endgame move for Black.

The main thing about this problem is that White has to connect at . The rest proceeds as normal.

Failure  

The atari at looks usual, but it is a careless move. Black has the sequence of moves from to , which turns the position into a ko.