This page is an extension of 56 Tactical Patterns That All Chess Players Should Know.
When an enemy piece has limited mobility (few or no safe squares available), you should investigate ways to trap and win that piece, particularly if it is a high-value piece.
Here are three examples of Trapping Pieces.
Example #1
1. Bc4 traps the black queen.
Example #2
1. Nxd5 cxd5? 2. Bc7
Example #3
1… Qxd1+ 2. Rxd1 Nc2+