What is a discovered attack in chess?

A discovered attack happens when a piece moves away and uncovers an attack from a piece behind it along the same file, rank, or diagonal. Because the moving piece usually creates a threat of its own as well, the opponent cannot defend against both at once. It is one of the most powerful and common tactical weapons in the middlegame.

How do I spot a discovered attack in a French Defense middlegame?

Look for aligned pieces — especially a pinned knight standing in front of its own bishop. The moment that knight can move with tempo, such as giving check, the bishop behind it gains a new target along the opened line. Ask which lines are already aligned and which enemy pieces are undefended along them.

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

A skewer attacks a valuable piece in front, and once that piece moves, the less valuable piece behind it is captured. A discovered attack works differently: a piece steps aside to uncover an attack from behind it. Both are tactical motifs that frequently win material in the middlegame, and recognizing which is available changes your move choice.

Why do pins lead to winning tactics in the French Defense?

The French Defense produces central pawn chains and congested positions, so pieces often line up on files and diagonals where pins arise naturally. A pinned piece cannot move freely — unless it moves with check or with another gain of tempo. That escape with tempo is what turns a pin into a discovered attack and a defensive piece into a decisive attacker.

How does the Tarrasch Variation create tactical chances for Black?

In the Tarrasch Variation Black builds a solid pawn center on d5 and develops quickly, while White's pieces sometimes reach active squares that later become vulnerable. Knowing the typical squares for both armies helps you recognize when a pinned defender can leap away with tempo to win material in the middlegame.

What is a middlegame tactic that wins material?

Discovered attacks, pins, forks, skewers, and overloaded defenders are the classic middlegame tactics that win material. They all share one principle: forcing play. Give check, threaten a larger piece, or create two simultaneous threats so your opponent's reply can only save one target. Practicing these patterns lets you convert them into decisive advantages.

French Defense Tarrasch Variation Puzzle (Rated 860): Spot

French Defense Tarrasch Variation Puzzle (Rated 860): Spot — Discovered Attack

A discovered attack is one of the cleanest ways to win material in the middlegame: a piece steps aside, opening a line for the piece behind it while creating a threat of its own. In this French Defense Tarrasch position, White's bishop on a4 pins a black knight to the bishop standing behind it. That pinned knight is the lever — moving it with tempo unveils a counterattack on the white bishop. When the smoke clears, Black has won a piece and secured a decisive advantage. A quiet-looking pin became a winning combination.