Chess Puzzle #uJ9Tk — Expert, Black to move, middlegame

Position

White: king g1; queen d1; rooks a1/e1; bishop f3; knight d7; pawns a2/b2/d3/e2/f2. Black: king e8; queen f5; rooks a8/h2; bishop f4; pawns a7/b7/f7/g7. White is ahead by 4 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Qa4 — queen d1→a4. Now Black to move.
2. Best move: Qg5+ — queen f5→g5, gives check. Opponent replies Kf1 (king g1→f1).
3. Best move: Rxf2+ — rook h2→f2, captures pawn, gives check. Opponent replies Kxf2 (king f1→f2, captures rook).
4. Best move: Be3+ — bishop f4→e3, gives check. Opponent replies Kf1 (king f2→f1).
5. Best move: Qg1# — queen g5→g1, delivers checkmate.

Tactical themes

attraction, kingside attack, mate, mate in 4, middlegame, sacrifice, very long. The combination ends with Qg1# delivering checkmate.

Position data

FEN: r3k3/pp1N1pp1/8/5q2/5b2/3P1B2/PP2PP1r/R2QR1K1 w q - 0 19

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