Kyu Exercise 89 / Solution

Solution  

This is a standard double shortage of liberties problem. The captured Black stones form a bent-four living shape, so White lives.

Failure  

The move here has the same aim as that of the solution, but can connect and give up the two Black stones. After , White has only one eye.

Failure  

Enlarging the eye space at here is also a failure. After , White ends up in a standard L-group dead shape.

Reference  

This diagram is only for reference. The jump at here is a tesuji that is often seen in such a corner pattern, and in this case allows White to live as well. But in this problem, it is inferior to capturing the four Black stones.