Hitachi Number 314 / Easy - Solution

Solution  

is a common tesuji to capture at least one stone.

Solution  

After , White cannot connet at a. takes advantage of shortage of liberties so White can still not play a.

Mistake  

This is a mistake: makes it ko

Mistake  

Immediately giving atari here is also a mistake: makes miai of a and b.

Variation  

This is the other side of the coin in the tesuji