Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 c5 3. cxd5 Qxd5 4. Nc3 Qxd4 5. Qxd4 cxd4 6. Nb5 Na6 7. Nf3 f6 8.
Nfxd4 e5 9. Nb3 Bd7 10. e4 Bb4+ 11. Bd2 Bxd2+ 12. Nxd2 Bxb5 13. Bxb5+ Ke7 14.
a3 Nh6 15. O-O Rhd8 16. Nc4 Nc5 17. Rad1 Nxe4 18. Rxd8 Rxd8 19. f4 Nd2 20. Nxd2
Rxd2 21. b3 e4 22. h3 f5 23. Rc1 Kd6 24. Rc8 Ra2 25. a4 Ra1+ 26. Kf2 Ra2+ 27.
Kg3 Rb2 28. Bc4 Kd7 29. Rh8 e3 30. Kf3 e2 31. Kf2 Ke7 32. Rxh7 Kf6 33. Rh8 a6
34. g3 b5 35. axb5 axb5 36. Bxb5 Rxb3 37. Bxe2 Rb2 38. Ra8 Nf7 39. Ra7 Nd6 40.
Ra6 Ke7 41. Ra7+ Kf8 42. Kf3 Ne4 43. Bc4 Nd2+ 44. Ke3 Nxc4+ 45. Kd4 Nd6 46. Ke5
Rd2 47. Ra6 Nc4+ 48. Kxf5 Rd3 49. Ke6 Re3+ 50. Kd5 Nb2 51. Rb6 Nd1 52. g4 Rxh3
53. f5 Ne3+ 54. Ke6 Nxg4 *
Position (FEN): 5k2/6p1/1R2K3/5P2/6n1/7r/8/8 w - - 0 55
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 432
Best move: Rb8#