RTG Problem 68 / Solution

Solution  

Making the exchange of and before the placement at is essential for the kill. White is unable to capture the , , and chain in a connect-and-die due to a shortage of liberties, but capturing the four stones with only results in a bulky four dead shape.

Solution  

If here, then making a placement at first prevents any complications that may arise after White a.

Solution  

Here, Black's corner is safe.