Fork: knight to h4
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The tactical motive
Fork: one piece attacks two targets at once — they can't both be saved.
Difficulty 1057 ShuffleRating — club-player level.
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 e1 e2, knight g2, pawn f2 a3 b3 c3.
Black: king g6, rook f3 g5, bishop d7, pawn e4 h4 c5 c6.
8 white and 8 black pieces are on the board; the puzzle position arises after move 42.
The position in numbers
Material is level — 17 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 g6.
It is White to move on move 42, with 21 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 4 pawns, Black 4. Files fully open (no pawns of either colour): d, g — natural highways for the rooks and queen. Half-open for White: e, h.
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
42. Nxh4+ Kf6 43. Nxf3
Why it works
- Great move! knight to h4 keeps the pressure (+3.8).
- A brilliant blow: knight to f3, and you are winning (+3.7).
- You win a piece — the rook.
- If instead Kf6, then Nxf3 and you win the rook.
Move by move
- 42. Nxh4+ — knight to h4 (capture) with check
- Kf6 — king to f6
- 43. Nxf3 — knight to f3 (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 006
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