Chess is in its essence a game, in its form an art, and in its execution a science.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown423"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "6k1/5p2/4p2p/3bPqp1/3P2P1/4RN1P/4QP1K/1r6 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... Qf4+ 2. Kg2 h5 ( { White can try: } 2... Qxd4 3. Rd3 Qc4 4. Qe3 Kg7 5. Kg3 { With a likely draw. } ) 3. Qc2 hxg4 4. Qxb1 gxh3+ ( { Black also wins
with... } 4... Bxf3+ 5. Rxf3 Qxf3+ 6. Kg1 gxh3 7. Qf1 g4 8. Kh2 g3+ 9. Kxh3 g2+ 10. Kh2 gxf1=Q 11. d5 Q1g2# ) 5. Kxh3 Bxf3 6. Qb8+ Kg7 7. Rxf3 Qxf3+ 8. Kh2 Qxf2+ 9. Kh1 Qxd4 10. Qc7 Qd2 11. Kg1 Kg6 12. Qd6 Qxd6 13. exd6 Kf6 14. Kf2 e5 15. Kf3 Ke6 16. Kg4 e4 17. Kg3 f5 18. d7 Kxd7 { Black wins with a large
material advantage. } 0-1