Chess Tactical Patterns Explained: Forks, Pins, Skewers and More

The eight tactical patterns behind most winning combinations, with clear examples and a simple habit for spotting them in your own games.

Almost every decisive tactic in a game between amateurs is one of a handful of patterns. Learn to recognise them and you stop calculating from scratch each time: you just notice that a pattern is available. This guide names the most important ones, shows what each looks like, and links to a training set where you can practise it.

The fork

A fork is a single move that attacks two or more pieces at once. The most famous version is the knight fork: a knight on e7, for instance, attacks both a king on g8 and a queen on c8, and the opponent can only save one. Pawns, bishops, rooks and queens fork too, but knights are the most dangerous because their jump cannot be blocked. Practice forks.

The pin

A pinned piece cannot move without exposing something more valuable behind it. If a bishop on g5 attacks a knight on f6 and the queen sits behind it on d8, the knight is pinned to the queen — moving it loses the queen. That is a relative pin, because the knight can legally move. An absolute pin is one against the king, where moving the pinned piece is illegal. Pins win material by attacking the pinned piece again until it falls. Practice pins.

The skewer

A skewer is the reverse of a pin: the more valuable piece is attacked first, and when it moves away it exposes a less valuable piece behind it. A rook checks a king along a file, the king steps aside, and the rook captures the queen that stood on the same file. Skewers are common in endgames with long-range pieces. Practice skewers.

The discovered attack

You move one piece and, in doing so, open a line for another. The moved piece makes its own threat while the unveiled piece attacks something else, which creates two threats at once. When the revealed attack is a check, it is a discovered check, and the moved piece can capture or threaten almost anything with impunity because the opponent must answer the check first. Practice discovered attacks.

Deflection

You force a defender away from the duty it is performing. A queen guarding a rook can be deflected by a sacrifice, which leaves the rook undefended. Deflection is a standard way of breaking down a defence that otherwise looks perfectly solid. Practice deflection.

The back-rank mate

A king hemmed in by its own pawns on the first (or eighth) rank can be mated by a rook or queen that reaches the back rank. With the pawns on f7, g7 and h7 unmoved and the king on g8, a rook landing on e8 is checkmate unless a piece guards the square or the king has a flight square. Making luft with h3 or h6 is a small move that prevents a huge disaster. Practice back-rank mates.

The hanging piece

Not glamorous, but it decides more games than all the others combined. A piece that is not protected can simply be captured, and a piece that is protected only once can often be won by attacking it twice. Most amateur blunders are loose pieces, not missed combinations. Practice hanging pieces.

Mating patterns

Not a single move but a family: smothered mate, the Arabian mate, the ladder mate. They are small collections of geometry that repeat, and they are worth memorising because a forced mate saves you all the calculation of anything else. Practice mate in 2.

A habit for finding them: checks, captures, threats

Before every move, run a quick scan: which checks do I have, which captures, which threats? Do the same for your opponent. Most patterns begin with one of those three kinds of move, and the scan costs five seconds. It also catches the case where your intended move leaves a piece hanging.

After a game, go through the moves where the evaluation changed the most. Our move classification guide explains how the engine flags them, and the puzzle sets let you rehearse the patterns you keep missing.