Chess Puzzle #WBWld — Advanced, Black to move, middlegame

Position

White: king g1; queen c2; rook f1; pawns a2/b2/c3/d4/f2/g4/h3. Black: king d8; queen f3; knight e4; pawns a6/b7/c7/d5. White is ahead by 5 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Kh2 — king g1→h2. Now Black to move.
2. Best move: Ng5 — knight e4→g5. Opponent replies Qf5 (queen c2→f5).
3. Best move: Qxh3+ — queen f3→h3, captures pawn, gives check. Opponent replies Kg1 (king h2→g1).
4. Best move: Nf3+ — knight g5→f3, gives check. Opponent replies Qxf3 (queen f5→f3, captures knight).
5. Best move: Qxf3 — queen h3→f3, captures queen.

Tactical themes

advantage, endgame, fork, very long. The key move Qxh3+ captures with check, forcing a response.

Position data

FEN: 3k4/1pp5/p7/3p4/3Pn1P1/2P2q1P/PPQ2P2/5RK1 w - - 0 31

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