What Is Discovered Attack in Chess?
A discovered attack is unleashed when one piece moves and unmasks an attack from a piece behind it — often winning material or giving check.
Definition
A discovered attack occurs when a piece moves and, in doing so, reveals an attack from a piece that was behind it on a line (rank, file, or diagonal). The power of a discovered attack comes from the fact that the moving piece can simultaneously threaten something else — creating two threats at once that the opponent may not be able to answer.
Example
White has a bishop on e4 aligned with the Black queen on a8, but a White knight on c6 is blocking. When the knight moves away — say to d8, giving check — it reveals the bishop's attack on the queen. Black must deal with the check, and White wins the queen.
Why It Matters for Your Chess
Discovered attacks are extremely powerful because they generate two threats simultaneously. The piece that moves can threaten a third thing while the piece behind delivers the real blow. Experienced players always look for 'unblocking' moves that reveal hidden attacks.
Frequently Asked Questions
What is a discovered check?
A discovered check is when a piece moves and the resulting uncovered attack is on the enemy king — putting it in check. These are especially dangerous because the moving piece can threaten material elsewhere while the opponent must spend a move escaping check.
What is a double check?
A double check is when the moving piece also gives check simultaneously with the discovered check piece. Double checks are among the most powerful tactics in chess because the king must move — it cannot block or capture both checking pieces.
Practice Discovered Attack in Your Games
FireChess detects tactical patterns like discovered attack in your games and shows you exactly what you missed — and how to find them next time.
Related Terms
Fork
A fork is a tactic where one piece attacks two or more enemy pieces simultaneously, forcing your opponent to lose material.
Pin
A pin is a tactic where a piece is immobilized because moving it would expose a more valuable piece behind it to capture.
Double Check
A double check is when two pieces simultaneously give check — the king must move since no single capture or block can stop both.
Zwischenzug
Zwischenzug (German for 'in-between move') is an unexpected intermediate move played instead of the expected reply, often changing the whole calculation.