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

Position

White: king g1; queen b3; rooks b1/f3; bishop c1; knights c4/c5; pawns b6/e3/g2. Black: king g8; queen h4; rooks a8/h6; bishop b7; knight d4; pawns a7/d7/e6/g7/h7. White is ahead by 1 point of material. Black to move.

Solution (4 moves)

1. Opponent setup: exd4 — pawn e3→d4, captures knight. Now Black to move.
2. Best move: Qe1+ — queen h4→e1, gives check. Opponent replies Rf1 (rook f3→f1).
3. Best move: Rh1+ — rook h6→h1, gives check. Opponent replies Kxh1 (king g1→h1, captures rook).
4. Best move: Qxf1+ — queen e1→f1, captures rook, gives check. Opponent replies Kh2 (king h1→h2).
5. Best move: Qxg2# — queen f1→g2, captures pawn, delivers checkmate.

Tactical themes

attraction, clearance, deflection, kingside attack, master, master vs master, mate, mate in 4, middlegame, very long. The combination ends with Qxg2# delivering checkmate.

Position data

FEN: r5k1/pb1p2pp/1P2p2r/2N5/2Nn3q/1Q2PR2/6P1/1RB3K1 w - - 0 25

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