Fork: queen to c8 (c7)
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The tactical motive
Fork: one piece attacks two targets at once — they can't both be saved.
Difficulty 1729 ShuffleRating — for advanced tacticians.
White to move — find the best continuation
How to recognize this tactic
A fork is one piece attacking two targets at once. Look for a knight, pawn or queen move that lands where it hits the king (or a bigger piece) and a second undefended unit on the same turn — the opponent can save only one.
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 c7, rook f1, pawn f2 g2 h3.
Black: king g8, queen a2, rook b4, pawn d5 e6 g6 a7 f7 h7.
6 white and 9 black pieces are on the board; the puzzle position arises after move 27.
The position in numbers
Black are ahead by 3 points of material (17 against 20; 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 g8.
It is White to move on move 27, with 33 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 3 pawns, Black 6. Files fully open (no pawns of either colour): b, c — natural highways for the rooks and queen. Half-open for White: a, d, 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
27. Qc8+ Kg7 28. Qc3+ d4 29. Qxb4
Why it works
- Great move! queen to c8 keeps the pressure (+4.8).
- Well found: queen to c3 (+4.9).
- Strong! queen to b4 is the sharp choice (+4.7).
- You win a piece — the rook.
- If instead Kg7, then Qc3+ and you stay on top.
Move by move
- 27. Qc8+ — queen to c8 with check
- Kg7 — king to g7
- 28. Qc3+ — queen to c3 with check
- d4 — pawn to d4
- 29. Qxb4 — queen to b4 (capture)
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.
Only move
Everything else loses — find the only move that holds.
An only move is a position where everything loses except one single continuation. You cannot play "by hand" here: run through fundamentally different defenses — run away, block, trade, counterattack — and discard the ones that fail. The hallmark of these puzzles is that the obvious moves lose quickly while the solution often looks strange. First understand exactly what the threat is — then the one saving move reveals itself.
Provenance
Derived from the Lichess puzzle database (CC0).
Verified by Stockfish at depth 20+.
Solution forcedness confirmed (verified).
Pack 013
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