Discovered attack: rook to d4
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The tactical motive
Discovered attack: one piece steps aside, unleashing another's attack.
Difficulty 1461 ShuffleRating — club-player level.
White to move — find the best continuation
How to recognize this tactic
A discovered attack fires when one piece steps aside and unmasks the piece behind it. Look for your own units that block a rook, bishop or queen: moving the front piece — ideally with a threat of its own — springs two attacks in one move.
General method: before you move, list the forcing candidates — every check, every capture, every direct threat — and calculate those first. The solution to a tactic is almost always among them.
Position on the board
White: king b1, queen e3, rook d1 h1, knight e4, pawn a2 c2 f2 b3 g4 h5.
Black: king c8, queen c7, rook d4 e8, bishop h7, pawn e5 c6 h6 a7 b7 g7.
11 white and 11 black pieces are on the board; the puzzle position arises after move 25.
The position in numbers
Material is level — 28 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).
The white king stands on b1, the black king on c8.
It is White to move on move 25, with 44 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 6 pawns, Black 6. Files fully open (no pawns of either colour): d — natural highways for the rooks and queen. Half-open for White: e.
The White king has 3 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
25. Rxd4 exd4 26. Nd6+ Qxd6 27. Qxe8+
Why it works
- Great move! rook to d4 keeps the pressure (+4.2).
- Well found: knight to d6 (+4.4).
- Strong! queen to e8 is the sharp choice (+4.4).
- You reach a winning position (+4.4).
- If instead exd4, then Nd6+ and you stay on top.
Move by move
- 25. Rxd4 — rook to d4 (capture)
- exd4 — pawn to d4 (capture)
- 26. Nd6+ — knight to d6 with check
- Qxd6 — queen to d6 (capture)
- 27. Qxe8+ — queen to e8 (capture) with check
Types in this puzzle
Royal fork
A fork with check: the king must move, and the second piece is lost.
A royal fork is a fork with check — one of the two targets is the king itself. The check must be answered first, so nobody is left to rescue the second piece. Look for squares where your piece gives check and simultaneously attacks an undefended queen or rook. It is the most reliable fork of all, because your opponent literally has no choice.
Counter-strike
Don't defend — answer the threat with a bigger one.
The counter-strike: instead of defending against the threat, you answer with a bigger threat of your own. While your opponent grabs a pawn, you deliver mate — the arithmetic favors you. Look for a counter when direct defenses fail: do you have a check, an attack on the queen, a mating threat? The beginner's error is meeting every threat with a reflexive defense without checking the counterattacking resources first.
Discovered attack
A piece steps aside and opens a second attack from the piece behind it.
A discovered attack works like a curtain: one piece steps off the line and unveils the long-range piece behind it. The beauty is that the moving piece can create a second threat of its own — two attacks in one move. Look for your stacked pairs: a bishop or rook behind a knight or pawn, aimed through them at something valuable. Send the front piece to the most aggressive square — a discovery without a second threat wastes half its power.
Provenance
Derived from the Lichess puzzle database (CC0).
Verified by Stockfish at depth 20+.
Solution forcedness confirmed (verified).
Pack 011
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