Mouse stealing oil

Mouse stealing oil  

Mouse stealing oil is a direct translation of the Chinese go term 老鼠偷油. It refers to the killing tesuji of , which exploits the fact that the four-stone Black chain has no outside liberties. This killing technique is a common theme in some life-and-death problems.

Mouse stealing oil  

If prevents White from connecting, then cuts. Black is dead from double shortage of liberties.

Mouse stealing oil  

here allows to connect back. Notice that in the presence of , the stone becomes an instance of the eye-stealing tesuji, and as such Black has no eye at a.