Chess puzzle (Checkmate)
Moves: 1. e4 Nf6 2. e5 Nd5 3. d4 b5 4. Bxb5 c5 5. dxc5 Qa5+ 6. Qd2 Qxb5 7. Qxd5 Bb7 8.
Nc3 Qc6 9. Qxc6 Bxc6 10. Nf3 Na6 11. Be3 Nb4 12. O-O-O a5 13. a3 Na6 14. Rhe1
e6 15. Nd4 Bxg2 16. f3 Bxc5 17. Ndb5 Bxe3+ 18. Rxe3 O-O 19. Rg1 Bh3 20. f4 Bf5
21. Nd6 Bg6 22. h4 h5 23. Reg3 Nc5 24. Ncb5 Ne4 25. Nxe4 Bxe4 26. Rxg7+ Kh8 27.
Nd6 Bg6 28. R7xg6 fxg6 29. Rxg6 Rxf4 30. Rh6+ Kg7 31. Rxh5 Rh8 32. Rg5+ Kf8 33.
h5 Rh4 34. Rg6 R8xh5 35. Rf6+ Kg7 36. Ne8+ Kg8 37. Nd6 Rd4 38. c3 Rd5 39. Rg6+
Kh7 40. Rf6 Rhxe5 41. Rf7+ Kg6 42. Rxd7 Re1+ 43. Kc2 Red1 44. Ra7 Rxd6 45. Rxa5
Kf6 46. b4 R6d2+ 47. Kb3 e5 48. Ra8 e4 49. Re8 Rd3 50. Rxe4 Rc1 51. Rc4 Ke5 52.
Rc5+ Ke4 53. a4 Ke3 54. a5 Kd2 55. a6 Ra1 56. b5 Rb1+ 57. Ka4 Kc2 58. Ka5 Rd6
59. Rc6 Rd5 60. Rb6 Kb3 61. a7 Rd7 62. Ra6 Rb7 63. a8=Q *
Position (FEN): Q7/1r6/R7/KP6/8/1kP5/8/1r6 b - - 0 63
Black to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 923
Best move: Ra1#