Puzzle of the Week: The Deadly Discovered Attack

Happy Valentine's Day — and what better gift to your chess skills than mastering the discovered attack? This tactical motif is one of the most powerful weapons in chess. When one piece moves out of the way, it "discovers" an attack from a piece behind it, often creating two threats at once. Today's puzzle is a classic example.

The Position

White to play and win material. Study the board carefully. The key is to find a move that unleashes a hidden attack while creating a second threat.

White has a knight on e4, a bishop on e2, a queen on d1, and a rook on a1. Black has a queen on d8, rooks on a8 and f8, a king on g8, a pawn on d5, and pawns on a7, b7, f7, g7, h7. Notice that White's bishop on e2 and queen on d1 are lined up on the same diagonal pointing toward Black's kingside.

Hints

Consider these questions before looking at the answer:

• The knight on e4 is sitting in front of the bishop on e2. What happens if the knight moves?
• Is there a square where the knight can deliver check while the bishop simultaneously attacks another piece?
• After the discovered attack, can Black deal with both threats at the same time?

Solution

1. Nd6! (Knight to d6 — discovered attack!)

The knight leaps to d6 with a powerful double purpose:

• The knight on d6 attacks the rook on f8 (and also threatens Nxf7).
• The bishop on e2 is uncovered — it now has a clear diagonal from e2 through h5, putting pressure on Black's kingside. More critically, the knight on d6 also forks the f8 rook and the b7 pawn while the bishop eyes the h5 square threateningly.

But the real power of the position is this: by moving to d6, the knight simultaneously:

• Attacks the rook on f8
• Discovers an attack from the bishop on e2 to h5, creating threats against the kingside

Black is in trouble because addressing both threats is impossible. If Black saves the rook on f8, White's bishop joins the attack. If Black tries to defend the kingside, the rook falls.

After 1...Rf6 (trying to save the rook)

2. Bh5! — The bishop swings to h5 with threats against f7 and the kingside. Black's position collapses under the combined pressure of the knight on d6 and the bishop on h5.

After 1...Qe7 (trying to cover)

2. Nxf8 — White simply captures the rook, winning the exchange (a rook for a knight). The discovered attack has done its job.

Understanding Discovered Attacks

A discovered attack occurs when one piece moves, revealing an attack from another piece behind it. There are several types:

• Discovered attack: The piece that moves creates its own threat, while the uncovered piece attacks something else. The opponent can usually only deal with one threat.
• Discovered check: The uncovered piece gives check to the king. Since the king must escape check immediately, the piece that moved can do almost anything — capture a queen, threaten mate, grab material.
• Double check: The most powerful form. Both the moving piece AND the uncovered piece give check simultaneously. The only way to escape a double check is to move the king — blocking or capturing does not work because there are two checking pieces.

"A discovered check is the dive bomber of the chessboard." — Reuben Fine, grandmaster and chess author.

Key Lesson: Look for Batteries and Alignments

The secret to spotting discovered attacks is recognizing alignments — situations where two of your pieces are on the same rank, file, or diagonal, with one piece in front of the other. Whenever you see this pattern, ask: "What if the front piece moves? What does the back piece attack?"

Common discovered attack setups include:

• A knight in front of a bishop (as in today's puzzle)
• A bishop in front of a rook on the same file
• A knight or bishop in front of a queen on a diagonal or file

Want to learn how to create discovered attacks in your games, not just solve them in puzzles? Our structured coaching programs teach you to recognize tactical patterns and apply them under tournament pressure. Reach out to learn more.