The combination is the heart of chess.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown172"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "6rk/1b5p/p3QN2/1p5P/3b4/5P2/PPP5/6RK b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... Bxf3+ ( { Black can try: } 1... Rxg1+ 2. Kh2 Kg7 3. Ne8+ Kh8 4. Qd6 Bg7 5. Kxg1 { White wins with a large material advantage. } ) 2. Kh2 Bxg1+ 3. Kh3 Bg2+ 4. Kh4 Bf2# 0-1