Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 exd4 5. Nxd4 Bd7 6. Nf5 a6 7. Bc4 b5 8. Bd5
Nf6 9. Qf3 Ne5 10. Bxa8 Nxf3+ 11. gxf3 Qxa8 12. Nc3 Bxf5 13. exf5 Qxf3 14. Rg1
Qxf5 15. Rg3 Be7 16. Be3 Qxc2 17. Rxg7 Qxb2 18. Rc1 Qb4 19. Bd2 Qh4 20. Kd1 Kd7
21. Kc2 Qh5 22. Re1 Ng4 23. Ne4 Qf5 24. Bg5 h6 25. Bxe7 Kxe7 26. f3 Nxh2 27.
Kb3 Qxf3+ 28. Kb4 c5+ 29. Ka5 Qa3+ 30. Kb6 Kf8 31. Rg2 Nf3 32. Rf1 Rg8 33. Rgf2
Rg1 34. Rxf3 Qxf3 35. Rxf3 Ke7 36. Kxa6 b4 37. Re3 Kd7 38. Kb6 Rg2 39. Rd3 Rg6
40. Nxc5+ Kc8 41. Ne4 d5+ 42. Nd6+ Rxd6+ 43. Kc5 Kc7 44. Kxb4 Rb6+ 45. Kc5 Rd6
46. a4 Rd8 47. a5 Kb7 48. Rf3 Ka6 49. Rxf7 Kxa5 *
Position (FEN): 3r4/5R2/7p/k1Kp4/8/8/8/8 w - - 0 50
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 486
Best move: Ra7#