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

Position

White: king h1; queen d1; rooks a1/f1; bishops d2/f3; knight f7; pawns a2/b2/c3/d4/f2/h2. Black: king c8; queen g4; rook g8; bishop e4; knights c6/d5; pawns a6/b7/c7/e6/h7. White is ahead by 6 points of material. Black to move.

Solution (5 moves)

1. Opponent setup: Ne5 — knight f7→e5. Now Black to move.
2. Best move: Qg2+ — queen g4→g2, gives check. Opponent replies Bxg2 (bishop f3→g2, captures queen).
3. Best move: Bxg2+ — bishop e4→g2, captures bishop, gives check. Opponent replies Kg1 (king h1→g1).
4. Best move: Bf3+ — bishop g2→f3, gives check. Opponent replies Ng6 (knight e5→g6).
5. Best move: Rxg6+ — rook g8→g6, captures knight, gives check. Opponent replies Bg5 (bishop d2→g5).
6. Best move: Rxg5# — rook g6→g5, captures bishop, delivers checkmate.

Tactical themes

discovered attack, fork, mate, mate in 5, middlegame, sacrifice, very long, X-ray attack. The combination ends with Rxg5# delivering checkmate.

Position data

FEN: 2k3r1/1pp2N1p/p1n1p3/3n4/3Pb1q1/2P2B2/PP1B1P1P/R2Q1R1K w - - 9 21

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