RTG Problem 78 / Solution

Black is dead  

The status of the Black group is dead. However, problem solvers are expected to find correct refutations for the possible resistance by Black, especially those that threaten life by under the stones.

Under the stones ( at )  

The aforementioned under the stones refers to a result like this. Of course, is wrong.

Solution ( at )  

Therefore, the correct way to respond to is to throw-in at . This prevents Black from living by under the stones.

Solution  

Similarly, the descend of should be answered by here, and not a.