Pattern # 3 This technique is explained in ebook Fundamental Chess Patterns and Encyclopedia of Chess Patterns
Enjoy the sample games in this page, clicking on the three dots below. If you like them, a like button is provided.
click e7 to flip board, d8 to get the PGN, f3 for next game, h8 for help, b2 for autoplay
Additional free different patterns can be found on this page of mine: Patterns
Side to move: