What is the difference between a discovered attack and a discovered check?

A discovered check is simply a discovered attack that targets the enemy king and therefore forces an immediate response. Any discovered attack that does not check the king is not a discovered check.

How does a double check arise from a discovered attack?

When the moving piece also gives check while uncovering an attack from the piece behind it, both checks must be answered at once. The only legal reply is to move the king.

What is a typical setup for a discovered attack?

Place a rook, queen, or bishop on an open line with a pawn or minor piece in front of it. Advancing or capturing with the front piece reveals the long-range attack behind it.

Discovered Attack

A discovered attack occurs when one piece moves off a line and uncovers an attack from a second piece standing behind it on the same rank, file or diagonal.

Category: Tactics
Difficulty: Beginner
Also known as: discovery, discovered check

Discovered Attack

A discovered attack occurs when one piece moves off a line and uncovers an attack from a second piece standing behind it on the same rank, file or diagonal. The moving piece frequently creates its own threat at the same time, so the opponent must meet two problems in a single turn.

The power of the tactic lies in this double threat. Even when the opponent can answer one problem, the second often remains unanswered. When the revealed attack is a check, the tactic is called a discovered check. When the moving piece also gives check, the result is a double check, which can only be met by moving the king.

Typical pattern

Align a rook, queen or bishop on an open line with a pawn or minor piece in front of it. When the front piece moves—capturing, checking or simply improving its position—the long-range piece strikes through the vacated square.

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A battery is the underlying formation that makes the discovery possible. The front piece often captures something of value or moves to a square that itself creates a new threat, forcing the opponent to choose which problem to solve.

Key takeaways

A discovered attack creates two threats at once, so the opponent frequently cannot answer both.
A discovered check is the case where the revealed attack targets the enemy king.
Double check results when the moving piece also checks the king and forces the king to move.
Typical setups place a rook, queen or bishop behind a pawn or minor piece on an open rank, file or diagonal.

Frequently asked questions

What is a discovered attack in chess?: It occurs when one piece moves off a line and uncovers an attack from a second piece standing behind it on the same rank, file, or diagonal. The moving piece often creates its own threat at the same time.
What is the difference between a discovered attack and a discovered check?: A discovered check is simply a discovered attack that targets the enemy king and therefore forces an immediate response. Any discovered attack that does not check the king is not a discovered check.
How does a double check arise from a discovered attack?: When the moving piece also gives check while uncovering an attack from the piece behind it, both checks must be answered at once. The only legal reply is to move the king.
What is a typical setup for a discovered attack?: Place a rook, queen, or bishop on an open line with a pawn or minor piece in front of it. Advancing or capturing with the front piece reveals the long-range attack behind it.

Referenced by

Attack — An attack is a move or coordinated plan that threatens an opponent’s piece, pawn, key square, or king, forcing them to respond.
Battery Play — A battery consists of two or more same-color pieces aligned on a rank, file, or diagonal so the rear piece supports or attacks through the forward piece once it moves or captures.
Cheap Trick — A cheap trick is an unsound tactical trap or swindle that succeeds only when the opponent overlooks an obvious threat, typically from a lost or inferior position.
Cheapo — A cheapo is a simple tactical trick or swindle played to catch an inattentive or time-pressed opponent.
Click Dragger — A click dragger moves pieces on digital boards by clicking and dragging rather than clicking once to select and again to place.
Cp — Cp is chess shorthand for counterplay, referring to active moves or plans that create threats, pressure, or complications to offset an opponent's initiative or material advantage.
Duck Chess — Duck Chess is a variant in which players alternate moving a shared, uncapturable duck to any empty square, where it blocks lines of attack and cannot be ignored.
Frozen Rook — A frozen rook is a rook immobilized by pins, discovered attacks, or defensive duties that prevent it from moving without allowing decisive material loss or check.
Half-Pin — A half-pin occurs when two same-color pieces stand on a line between an enemy piece and a target such as the king, so that moving either one exposes the other to capture or check.
Interference — Interference is a tactical motif in which a piece is placed on a line to obstruct an opponent’s defender from protecting a key square or unit, typically breaking a pin or discovered attack.
King Hunt — A king hunt is a sustained tactical attack that forces the enemy king from safety into the open board, often ending in checkmate.
Morphy's Mate — A checkmate pattern in which a rook or queen attacks the castled king along an edge file while protected by a bishop that also controls key flight squares.
Swindle — A swindle is a tactical resource that lets a player in a lost position force a draw or win by exploiting the opponent’s relaxation and resulting oversight.
Tactics — Tactics are short sequences of forcing moves that win material, deliver checkmate, or gain a decisive advantage by exploiting immediate threats like forks, pins, or discovered attacks.
Tempo — Tempo is the advantage of making a useful move while forcing the opponent to respond without progress, often gained by a check, threat, or capture that compels a reply.
Threat — A threat is a move or plan that would win material, deliver check, or gain another advantage if the opponent does not prevent it on their next turn.

About the reviewer

Maria Russell

Maria didn't grow up dreaming of chess. She grew up dreaming of getting through bedtime without a meltdown, and chess just happened to be the thing that worked.

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