Fork: knight to d4 (f5)
li-067rjnaming tag (square·N)Opens in the app if installed, otherwise downloads the APK.
The tactical motive
Fork: one piece attacks two targets at once — they can't both be saved.
Difficulty 1821 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 h2, rook g3 g4, knight f5, pawn g2 h3.
Black: king e6, rook f2 a7, pawn b4 e4 a5 d5 h6.
6 white and 8 black pieces are on the board; the puzzle position arises after move 35.
The position in numbers
Material is level — 15 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).
The white king stands on h2, the black king on e6.
It is White to move on move 35, with 23 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 2 pawns, Black 5. Files fully open (no pawns of either colour): c, f — natural highways for the rooks and queen. Half-open for White: a, b, 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
35. Nd4+ Kd6 36. Nb5+ Kc5 37. Nxa7
Why it works
- Great move! knight to d4 keeps the pressure (+1.8).
- Spot on — knight to b5 (+2.0).
- Strong! knight to a7 is the sharp choice (+1.9).
- You win a piece — the rook.
- If instead Kd6, then Nb5+ and you stay on top.
Move by move
- 35. Nd4+ — knight to d4 with check
- Kd6 — king to d6
- 36. Nb5+ — knight to b5 with check
- Kc5 — king to c5
- 37. Nxa7 — knight to a7 (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.
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 013
Similar puzzles
In your browser or in the Android app. Nothing to install · Free, no ads