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

Position

White: king g1; queen c2; rooks a1/e1; bishops b3/c1; knights d2/f3; pawns a2/b2/e5/f2. Black: king g8; queen d7; rooks a8/f8; bishops e7/h3; knight f6; pawns a6/c6/d6/f7/g7/h7. White is ahead by 1 point of material. Black to move.

Solution (4 moves)

1. Opponent setup: Kh2 — king g1→h2. Now Black to move.
2. Best move: Qg4 — queen d7→g4. Opponent replies Rg1 (rook e1→g1).
3. Best move: Qh5 — queen g4→h5. Opponent replies Rg3 (rook g1→g3).
4. Best move: Bf5+ — bishop h3→f5, gives check. Opponent replies Kg1 (king h2→g1).
5. Best move: Bxc2 — bishop f5→c2, captures queen.

Tactical themes

advantage, clearance, discovered attack, exposed king, middlegame, very long. The key move is Qg4.

Position data

FEN: r4rk1/3qbppp/p1pp1n2/4P3/8/1B3N1b/PPQN1P2/R1B1R1K1 w - - 1 19

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