Beginner Exercise 37 / Solution

Black can't push  

Shortage of liberties prevents White from playing at . Thus White is left with a false eye.

Black does not play at for a peep because White would play at and live. ( and are miai for the second eye.)

Toast  

captures one stone, but leaves White dead. The points a and b are miai, meaning that the eye is false.

Failure

Ko  

is part of the solution, but if is played as shown in this diagram, we end up with a ko instead of an unconditional kill.

Change the order?  

Black must play and in the order described in the solution diagram.

White says "thank you"  

Black is a thank you move that allows White to connect at and live.