Chapter 32: A Trojan Horse

I am reading How to Beat Your Dad at Chess by Murray Chandler. I am blogging to create supporting puzzles in studying the content.

When attacking a castled king, often a sacrifice can lead to a winning position that is worth the material loss. 

136) The basic pattern beginning with a sacrifice.

137) A more real-world scenario with the same approach. Even thought White has the concerning Knight-pin by , the sacrifice will begin a series of forced moves resulting, after strategic clearance of the f7-, with mate.