Sadaharu: Agree with below that white can play at q18 and h18 after black takes the stones to extend liberties
d4rkm4tter: Very nice, I see. This gives white 2 more liberties. Some of those last 20 problems got even more advanced than I expected. I'm going to add custom explanations to some of them.
Agree with below that white can play at q18 and h18 after black takes the stones to extend liberties