Discovered attack: bishop to g6 (d3)
li-04q9knaming tag (square·N)Opens in the app if installed, otherwise downloads the APK.
The tactical motive
Discovered attack: one piece steps aside, unleashing another's attack.
Difficulty 1908 ShuffleRating — for advanced tacticians.
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 g1, queen g3, rook a1 f1, bishop d3, pawn f2 g2 a3 b3 h3 d4.
Black: king f7, queen c3, rook a8 f8, bishop c8, knight b8, pawn d5 e6 h6 a7 b7.
11 white and 11 black pieces are on the board; the puzzle position arises after move 23.
The position in numbers
Black are ahead by 2 points of material (28 against 30; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on g1, the black king on f7.
It is White to move on move 23, with 40 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 6 pawns, Black 5. Files fully open (no pawns of either colour): c — natural highways for the rooks and queen. Half-open for White: e.
The White king has 2 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
23. Bg6+ Kg7 24. Qxc3
Why it works
- Great move! bishop to g6 keeps the pressure (+6.0).
- Well found: queen to c3 (+6.1).
- You win a piece — the queen.
- If instead Kg7, then Qxc3 and you win the queen.
Move by move
- 23. Bg6+ — bishop to g6 with check
- Kg7 — king to g7
- 24. Qxc3 — queen to c3 (capture)
Types in this puzzle
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.
Clearance
Clear your own piece out of the way — with tempo — for the decisive blow.
Clearance is about your own piece standing in the way of the decisive blow — so you move it aside, or even throw it away. The key is to clear with tempo: jump off with a check, a capture or a threat, giving the opponent no time to regroup. The telltale sign: you see a crushing queen or rook move, but one of your own pieces blocks the line or occupies the square. Do not cling to it — a clearance sacrifice usually costs less than a missed attack.
Provenance
Derived from the Lichess puzzle database (CC0).
Verified by Stockfish at depth 20+.
Solution forcedness confirmed (verified).
Pack 014
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