Xuanxuan Qijing Problem 65 / Solution

 

The group is dead after .

Black has 3 stronger resistance, let's look at them one by one.

Resistance 'a'  

After , black can't get both 'x' and 'y'.

Resistance 'b'  

Black is unable to capture even by playing 'x' due to shortage of liberties.

Resistance 'c'  

and looks like good responses, but aims to capture with 'x' or destroy black's eye with 'y'.

Failure

 

Compare with the solution, here is too late.

Instead of blocking, secures an eye.

Next if white tries to connect out, black 'a' is good enough.

 

is interesting. at 'a' result in death.

 

is a rather weak attempt.

Black has all these marked moves to make life.

 

For other , is sufficient.