BeginnerExercise237/Solution
is the following examples is the key.
![[Diagram]](../../diagrams/35/5ad9c11a46ff7a0917746f9737e630f2.png)
path 1 - optimal
Black gets the 3 white stones in a snapback
![[Diagram]](../../diagrams/34/7a0a7dc8714773ad845861427bf01b71.png)
path 1 - why not protect?
If
would protect against the snapback, Black would cut white in two killing more white stones.
![[Diagram]](../../diagrams/32/5de1568303668f97f406e373a4fb28fb.png)
path 1 - why go for all?
Because White can just capture the cutting stones then.
![[Diagram]](../../diagrams/39/54b5d11ddeaabfb759eb3268a40faa18.png)
path 3
prevents a snapback
billyswong: However, in path 2 and 3, white results with loss of more than the original 3 stones with no gain. But the snapback in path 1 can be used as a ko threat later on.