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

Position

White: king h1; queen e2; rook c1; bishop d1; pawns a3/b2/c4/d5/e3/g2/h2. Black: king g7; queen g5; rook f8; knight f5; pawns a7/b6/c5/d6/h6. White is ahead by 2 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Qg4 — queen e2→g4. Now Black to move.
2. Best move: Ng3+ — knight f5→g3, gives check. Opponent replies hxg3 (pawn h2→g3, captures knight).
3. Best move: Rf1+ — rook f8→f1, gives check. Opponent replies Kh2 (king h1→h2).
4. Best move: Qxg4 — queen g5→g4, captures queen. Opponent replies Bxg4 (bishop d1→g4, captures queen).
5. Best move: Rxc1 — rook f1→c1, captures rook.

Tactical themes

advantage, clearance, endgame, kingside attack, sacrifice, very long. The key move is Ng3+.

Position data

FEN: 5r2/p5k1/1p1p3p/2pP1nq1/2P5/P3P3/1P2Q1PP/2RB3K w - - 2 31

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