Chess puzzle (Checkmate)
Moves: 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 g6 6. Nf3 Bg7 7. cxd5 Nxd5 8.
Bc4 Nb6 9. Bb3 O-O 10. O-O Nc6 11. d5 Na5 12. Re1 h6 13. Be3 Nac4 14. Bd4 Nxb2
15. Qe2 Bxd4 16. Nxd4 e5 17. dxe6 Qxd4 18. exf7+ Kh7 19. Qxb2 Bf5 20. Rad1 Qf6
21. Qd2 Rac8 22. Ne4 Qc6 23. Nd6 Rcd8 24. Re8 Bg4 25. f3 Bc8 26. Rxf8 Rxf8 27.
Rc1 Qd7 28. Qf4 Kg7 29. h4 Qe7 30. Qd4+ Kh7 31. Ne4 h5 32. Ng5+ Kh6 33. Qf4 Kg7
34. Kf2 Bd7 35. Re1 Qa3 36. Kg3 Qa5 37. Re5 Qc3 38. Re8 Rxe8 39. fxe8=Q Bxe8
40. Ne6+ Kh7 41. Nf8+ Kg7 42. Ne6+ Kh7 43. Qf8 Qe1+ 44. Kf4 Qxh4+ 45. Ke5 Qg3+
46. f4 Qe3+ 47. Kf6 Qc3+ 48. Ke7 Qb4+ 49. Kxe8 Qb5+ 50. Kd8 *
Position (FEN): 3K1Q2/pp5k/1n2N1p1/1q5p/5P2/1B6/P5P1/8 b - - 2 50
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1029
Best move: Qd7#