Beginner Exercise 122 / Solution
If Black resists with , then forces the win.
If , then catches Black in a snapback.
Black's descent with still cannot save him.
at a was a blunder. Black should have played here instead. Now is captured.
If here, then all the white stones are captured. (This is an example of where One-Two-Three doesn't work!) For how white can save part of the group, see the variations at Kyu Exercise 75.