Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. e3 Nc6 3. Nc3 Nf6 4. Bd3 e5 5. dxe5 Nxe5 6. Bd2 Nxd3+ 7. cxd3 Qe7
8. Nf3 Bg4 9. O-O O-O-O 10. d4 Ne4 11. a3 Nxd2 12. Qxd2 Bxf3 13. gxf3 Qg5+ 14.
Kh1 Bd6 15. Rg1 Qh6 16. Rg2 g5 17. Nxd5 Qg6 18. e4 h5 19. Qc2 h4 20. Qc3 c6 21.
Nb4 Bxb4 22. Qxb4 Qf6 23. d5 Qxf3 24. Kg1 h3 25. Rg3 Qf4 26. dxc6 bxc6 27. Qc5
Kb7 28. Rc1 Rc8 29. b4 Rhd8 30. Rxh3 Qxe4 31. a4 Qd5 32. Qe7+ Rd7 33. Qe2 Qd2
34. Qxd2 Rxd2 35. Rf3 Rd7 36. Rc5 Rg8 37. Rg3 f6 38. Rf5 Rf7 39. b5 cxb5 40.
Rxb5+ Kc6 41. Rc3+ Kd6 42. Rd3+ Kc6 43. Rc3+ Kd6 44. Ra5 f5 45. Ra6+ Ke5 46.
Re3+ Kd4 47. Rd6+ Kc5 48. Rde6 f4 49. R3e5+ Kd4 50. Re4+ Kd5 51. R6e5+ Kd6 52.
Re6+ Kd7 53. Ra6 Kc8 54. Rc4+ Kb7 55. Rac6 g4 56. R6c5 a6 57. Rb4+ Ka7 58. a5
f3 59. Rb6 Rb7 60. Rcc6 Rgb8 *
Position (FEN): 1r6/kr6/pRR5/P7/6p1/5p2/5P1P/6K1 w - - 4 61
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1178
Best move: Rxa6#