Fork: rook to c4
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The tactical motive
Fork: one piece attacks two targets at once — they can't both be saved.
Difficulty 1453 ShuffleRating — club-player level.
Black 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 f1, rook c1 c4, bishop a1, pawn f3 e4 h4 c6.
Black: king g8, rook b4 b8, knight c7, pawn e6 g6 f7.
8 white and 7 black pieces are on the board; the puzzle position arises after move 41.
The position in numbers
White are ahead by 1 points of material (17 against 16; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on f1, the black king on g8.
It is Black to move on move 41, with 27 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 4 pawns, Black 3. Files fully open (no pawns of either colour): a, b, d — natural highways for the rooks and queen. Half-open for Black: c, h.
The Black king has 2 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
41... Rxc4 42. Rxc4 Rb1+ 43. Kf2 Rxa1
Why it works
- Great move! rook to c4 keeps the pressure (+3.4).
- Well found: rook to b1 (+3.4).
- Strong! rook to a1 is the sharp choice (+3.4).
- You win a piece — the rook.
- If instead Rxc4, then Rb1+ and you stay on top.
Move by move
- 41… Rxc4 — rook to c4 (capture)
- 42. Rxc4 — rook to c4 (capture)
- Rb1+ — rook to b1 with check
- 43. Kf2 — king to f2
- Rxa1 — rook to a1 (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.
Endgame tactic
Tactics live in the endgame too — strike while material is scarce.
Tactics do not retire when the queens come off: forks, pins and double attacks live on in the endgame. With so little material left, every tactical loss is almost always decisive. The signs are the usual ones — undefended pieces, king and piece on one line, a pawn about to promote. Even in a "technical" ending, scan for a shot before every move, both yours and your opponent's.
Provenance
Derived from the Lichess puzzle database (CC0).
Verified by Stockfish at depth 20+.
Solution forcedness confirmed (verified).
Pack 011
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