Beginner Exercise 69 / Solution

Solution.  

After , since White a is not possible (Black will capture at b), Black lives as a twisted four. Now c and d are miai.

Failure 1  

Black dies by bulky five.

Failure 2  

Playing at looks good, but will capture the marked stone. However, has to be careful not to play at a or b.

Failure 3  

is the vital point here.

Failure 4  

is probably the weakest move among the failure diagrams.

Failure 5  

If white b, then black c dies. So after white b, a and d become miai for black.