Chess Puzzle #OCVg4 — Advanced, Black to move, middlegame

Position

White: king h1; queen e3; rooks f1/f2; bishop e2; knight f3; pawns b3/c3/e5/g2/h2. Black: king g8; queen a3; rooks f4/f8; knight d7; pawns b5/c6/d5/e6/g7/h6. White is ahead by 2 points of material. Black to move.

Solution (5 moves)

1. Opponent setup: Nd4 — knight f3→d4. Now Black to move.
2. Best move: Rxf2 — rook f4→f2, captures rook. Opponent replies Rxf2 (rook f1→f2, captures rook).
3. Best move: Qa1+ — queen a3→a1, gives check. Opponent replies Bf1 (bishop e2→f1).
4. Best move: Qxf1+ — queen a1→f1, captures bishop, gives check. Opponent replies Rxf1 (rook f2→f1, captures queen).
5. Best move: Rxf1+ — rook f8→f1, captures rook, gives check. Opponent replies Qg1 (queen e3→g1).
6. Best move: Rxg1+ — rook f1→g1, captures queen, gives check.

Tactical themes

equality, kingside attack, middlegame, very long, X-ray attack. The key move Qxf1+ captures with check, forcing a response.

Position data

FEN: 5rk1/3n2p1/2p1p2p/1p1pP3/5r2/qPP1QN2/4BRPP/5R1K w - - 3 30

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