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

Position

White: king g1; queen e6; rooks a1/f1; bishops d3/e3; knight f4; pawns a2/b2/c2/e4/g2/h2. Black: king b8; queen g7; rooks d8/g8; bishop b4; knight g4; pawns a6/b7/d6/h7. White is ahead by 5 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Bc1 — bishop e3→c1. Now Black to move.
2. Best move: Qd4+ — queen g7→d4, gives check. Opponent replies Kh1 (king g1→h1).
3. Best move: Nf2+ — knight g4→f2, gives check. Opponent replies Rxf2 (rook f1→f2, captures knight).
4. Best move: Qxf2 — queen d4→f2, captures rook. Opponent replies Be3 (bishop c1→e3).
5. Best move: Qxe3 — queen f2→e3, captures bishop.

Tactical themes

equality, kingside attack, middlegame, very long. The key move is Qd4+.

Position data

FEN: 1k1r2r1/1p4qp/p2pQ3/8/1b2PNn1/3BB3/PPP3PP/R4RK1 w - - 5 20

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