This page is an extension of 56 Tactical Patterns That All Chess Players Should Know.
A pin occurs when a piece cannot move without exposing a more valuable piece behind it. Pinned pieces are often vulnerable because they cannot perform their normal defensive duties, making them natural targets for tactical operations.
Here are three examples of Pins.
Example #1
1… Qxg3+ 2. Kh1 Qxf4. The pawn on f2 is pinned.
Example #2
1. Qc8! Re7 2. Qxe6
Example #3
1… Qd1+