Discovered attacks: moving one piece to unleash another
In a discovered attack, the piece that moves is not the one doing the damage. Stepping aside opens a line for the rook, bishop or queen standing behind it — and the moving piece can create a second threat on its way.
Discovered check is the sharpest version: the opponent must answer the check, so the front piece can capture almost anything it likes.
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How to spot it
- Line up a rook, bishop or queen behind one of your own pieces, pointing at the enemy king or queen.
- Ask what the front piece could do if it were free to move anywhere.
- Prefer front-piece moves that make their own threat, so the opponent faces two problems at once.
Practise this pattern
Play the winning move on a real board in verified discovered attack positions, with hints and worked solutions.
Start the exercisesHow to defend against it
- Break the line: block it with a pawn, or move the target off the file, rank or diagonal.
- Never leave the king lined up with an enemy slider through a single enemy piece.
- Capture or chase the front piece before the battery is loaded.
Common mistakes
- Playing the discovery too early, when the front piece has no useful square yet.
- Overlooking that the moving piece can be captured with tempo.
Frequently asked questions
- What is the difference between a discovered attack and a discovered check?
- In a discovered check, the uncovered line hits the enemy king, which makes the opponent's reply forced. A discovered attack hits any other piece.
- What is a double check?
- A discovery where both the moving piece and the uncovered piece give check. The king must move — nothing can block or capture both attackers.