Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. Bxc6 dxc6 5. d3 h6 6. h3 Bd6 7. Be3 b6 8. a3
Bb7 9. Nc3 Nf6 10. Qd2 c5 11. O-O-O Qd7 12. b3 a5 13. a4 c4 14. dxc4 Nxe4 15.
Nxe4 Bxe4 16. Kb1 O-O-O 17. Rhe1 Qf5 18. Nh4 Bxc2+ 19. Qxc2 Qxc2+ 20. Kxc2 Bb4
21. Re2 Rde8 22. Nf3 f5 23. Nh4 f4 24. Bd2 g5 25. Ng6 Rhg8 26. Nxe5 Bc5 27.
Rde1 Rd8 28. Nf7 Rd7 29. Nxh6 Rf8 30. Ng4 Bb4 31. Bxb4 axb4 32. Ne5 Rd6 33. Rd2
Rfd8 34. Red1 Re8 35. Nf7 Rxd2+ 36. Rxd2 Rg8 37. Rd5 g4 38. hxg4 Rxg4 39. Rg5
Rh4 40. Kd3 Rh2 41. Ke4 Rh4 42. Kf3 Rh1 43. Kxf4 Rf1 44. Kf3 Rb1 45. Rg8+ Kb7
46. Nd8+ Ka6 47. Nc6 Rxb3+ 48. Ke4 Rb2 49. g4 b3 50. Ke3 Rxf2 51. Kxf2 b2 52.
Nb4+ Ka5 53. Nd3 b1=Q *
Position (FEN): 6R1/2p5/1p6/k7/P1P3P1/3N4/5K2/1q6 w - - 0 54
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 892
Best move: Ra8#