The combination is the heart of chess.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown68"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "1k6/Qp6/2p1p3/2Bp4/2PP1p2/5q2/KP6/6q1 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... Kc7 ( { Black can try: } 1... Kc8 2. Qa8+ Kc7 ( { Black can try: } 2... Kd7 3. Qxb7+ Kd8 4. Qe7+ Kc8 5. Qe8+ Kc7 6. Bd6+ Kb6 7. Qb8+ Ka6 8. Qc8+ Ka5 ( { Black can try: } 8... Kb6 9. Bc5+ Ka5 10. Qa8# ) 9. b4+ Ka4 10. Qa6# ) 3. Bb6+ Kxb6 ( { Black dare not try: } 3... Kd7 4. Qd8# ) 4. Qd8+ Ka7 5. Qa5+ Kb8 6. Qd8+ { Draw by repetition of position. } ) 2. Bb6+ Kd7 ( { Black dare not
try: } 2... Kc8 3. Qa8+ Kd7 4. Qd8# ) 3. Qxb7+ Ke8 4. Bc5 ( { White can try: } 4. Qxc6+ Kf7 5. Qd7+ Kf6 6. Bd8+ Kf5 7. Qf7+ Ke4 8. Qxe6+ Kd3 9. cxd5 Qxd4 10. Qf5+ Qfe4 11. Qxe4+ Kxe4 { Black wins with a large material advantage. } ) 4... Qg5 5. Qxc6+ Kf7 ( 5... Kd8 6. Qd6+ Kc8 7. Qa6+ Kd7 8. Qd6+ Ke8 9. Qf8+ Kd7 10. Qd6+ Kc8 11. Qa6+ Kc7 12. Qd6+ Kc8 { Draw by repetition of position. } ( { Black dare not try: } 12... Kb7 13. Qd7+ Kb8 14. Bd6+ Ka8 15. Qc8+ Ka7 16. Bc5# ) ) 6. Qd7+ Kg6 7. Qxe6+ Qf6 8. cxd5 Qxe6 9. dxe6 Qd5+ 10. Ka3 Qxe6 { Black wins with a large material advantage. } 0-1