Trap the knight on c3
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The tactical motive
Trapped piece: an enemy piece has no safe squares — catch it.
Difficulty 1824 ShuffleRating — for advanced tacticians.
White to move — find the best continuation
How to recognize this tactic
A trapped piece has no safe square. Spot an enemy piece that has wandered offside or been hemmed in, then play the move that takes away its last escape and wins it — often a quiet pawn push or a covering minor piece.
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 h1, queen c5, rook f1 d2, knight e2, pawn g2 h2 f3 e4.
Black: king g8, queen a4, rook a8 f8, knight g6, pawn a6 c6 e6 h6 f7 g7.
9 white and 11 black pieces are on the board; the puzzle position arises after move 22.
The position in numbers
Black are ahead by 2 points of material (26 against 28; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on h1, the black king on g8.
It is White to move on move 22, with 53 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 4 pawns, Black 6. Files fully open (no pawns of either colour): b, d — natural highways for the rooks and queen. Half-open for White: a, c.
The White king has 1 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
22. Nc3 Qb3 23. Rb1 Qxb1+ 24. Nxb1
Why it works
- Great move! knight to c3 keeps the pressure (+3.4).
- Well found: rook to b1 (+3.6).
- Strong! knight to b1 is the sharp choice (+3.3).
- You win a piece — the queen.
- If instead Qb3, then Rb1 and you stay on top.
Move by move
- 22. Nc3 — knight to c3
- Qb3 — queen to b3
- 23. Rb1 — rook to b1
- Qxb1+ — queen to b1 (capture) with check
- 24. Nxb1 — knight to b1 (capture)
Types in this puzzle
Quiet move
No check, no capture — yet this modest move decides the game.
A quiet move gives no check and takes nothing — yet it decides the game by creating an unstoppable threat or stealing the king's last square. This is the hardest class of moves: the eye hunts for loud blows while a modest shift does the winning. The clue: every forcing try runs into a defense, so seek the move that strengthens the threat or takes squares away. Train yourself to ask: what if I neither capture nor check, but quietly improve?
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).
Pack 013
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