RTG Problem 49 / Solution

Solution  

The solution is, Black is dead.

Solution  

To see that Black is dead, consider the standard connect-and-die sequence of to . But is the key move to kill.

Solution ( at )  

If captures the four White stones, then followed by kills Black in a farmer's hat dead shape.

Solution  

If makes an eye in the corner, then connects. Subsequently, Black a is self-atari, so Black is dead.

Solution  

is an interesting resistance. However, after , either Black a, White b which kills with a bulky five dead shape, or Black b, White c which kills because of shortage of liberties.

Solution  

If descends here, then the block at is sufficient. Subsequently, Black a is answered by White b, and Black b is answered by White c.