Fork: knight to e3 (g4)
li-036eknaming 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 870 ShuffleRating — for beginners taking their first steps in Chess960 tactics.
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 g2, rook f1 f4, knight e4, pawn b2 c2 a3 g3 h4 d5.
Black: king h7, rook f8 h8, knight g4, pawn c4 b5 h5 a6 d6 g6.
10 white and 10 black pieces are on the board; the puzzle position arises after move 36.
The position in numbers
Material is level — 19 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).
The white king stands on g2, the black king on h7.
It is Black to move on move 36, with 24 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 6 pawns, Black 6. Files fully open (no pawns of either colour): e, f — natural highways for the rooks and queen.
The Black king has 3 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
36... Ne3+ 37. Kg1 Nxf1
Why it works
- Great move! knight to e3 keeps the pressure (+3.9).
- Well found: knight to f1 (+4.3).
- You win a piece — the rook.
- If instead Kg1, then Nxf1 and you win the rook.
Move by move
- 36… Ne3+ — knight to e3 with check
- 37. Kg1 — king to g1
- Nxf1 — knight to f1 (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 004
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