Beginner Exercise 305 / Solution

Solution  

Black has an eye at the top. gives him a second eye below.

Solution  

If White connects with then makes a and b miai.

Solution  

If , then a and b are also miai after .

Solution  

If , Black can respond with . Then if White at b then Black a; if White at a, then Black c, followed by b.

Solution  

This also fails.

Failure  

If cuts, then is the vital point. Black can at most get a false eye at a.

Failure  

Same for this .