It’s important to know chess tactics patterns because it supports an effective calculation method and will improve your tactical awareness.
Here’s a list of the important chess tactics patterns you should know.
List of the Important Chess Tactics Patterns
Note: You should also study the given examples to help you get a better understanding of the patterns.
Interference or obstruction
blocking a critical file or diagonal
Clearing a square; Opening a critical square, file or diagonal
A double attack is when you create multiple threats with one move. Although a fork and a double attack are often used interchangeably in chess, it’s technically not the same thing.
The king must move.
A fork tactic is when one of your pieces are making multiple threats at the same time. Even though a fork is sometimes referred to as a double attack, it’s not the same thing. The main difference is that a fork refers to multiple threats made by one piece, whereas a double attack can involve multiple threats by more than one piece.
Often overlooked because the focus is on the pieces
A pin is when a threatened piece cannot move without exposing an even more valuable piece (or target) behind it. The link below will take you to an in-depth study of pin tactics where you can learn the basics but also the advanced aspects of pin tactics:
Remove the Defender
.. Capture a defender .. Overload a defender .. Attack a defender
into a winning endgame
Skewers (sometimes referred to as a “reversed pin”) occur when an attacked piece must move to safety but will expose a lower-valued piece (or target) behind it. Skewers appear visually similar to pins, but their impact is very different.
An X-Ray tactic occurs when two of your pieces defend one another “through” an enemy piece. The X-Ray tactic should not be confused with a pin, skewer or discovered attack. (Although they share some similarities, the concept behind an X-Ray is unique).
position IS ok but forced to make a weakening move
or In-between move