Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 bxc6 5. e5 g6 6. O-O Bg7 7. Re1 e6 8. Na3
Ne7 9. Nc4 O-O 10. d3 f6 11. Bf4 Nd5 12. Bg3 f5 13. h3 a5 14. Bh4 Qc7 15. Bg3
Ba6 16. b3 Bxc4 17. dxc4 Ne7 18. Qd3 h6 19. Rad1 Rad8 20. a4 f4 21. Bh4 g5 22.
Bxg5 hxg5 23. Nxg5 Nf5 24. g4 Bh6 25. Nf3 Nd4 26. Qg6+ Bg7 27. Ng5 Nf3+ 28.
Nxf3 d5 29. exd6 Qf7 30. Qxe6 Qxe6 31. Rxe6 Rd7 32. Ng5 Bd4 33. Ne4 Kf7 34.
Re7+ Rxe7 35. dxe7 Kxe7 36. Kg2 f3+ 37. Kf1 Rh8 38. Ng5 Rf8 39. Rd3 Rh8 40.
Rxf3 Bf6 41. Ne4 Bd4 42. c3 Be5 43. Nxc5 Rb8 44. Nd3 Bxc3 45. h4 Bd2 46. g5
Rxb3 47. g6 Bc3 48. h5 Bg7 49. Ke2 Bh6 50. Nc5 Rb2+ 51. Kd3 Rd2+ 52. Ke4 Kd6
53. Nb7+ Ke6 54. Nxa5 c5 55. Nb7 *
Position (FEN): 8/1N6/4k1Pb/2p4P/P1P1K3/5R2/3r1P2/8 b - - 1 55
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1172
Best move: Rd4#