Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Bf4 Nc6 3. c3 f6 4. e3 e5 5. Bg3 Bd6 6. Qh5+ g6 7. Qh4 e4 8. Bxd6
Qxd6 9. Bb5 Bd7 10. Ne2 a6 11. Nf4 Nge7 12. Bxc6 Bxc6 13. Qh3 Bd7 14. Qh6 O-O-O
15. Nd2 f5 16. Nb3 b6 17. a4 a5 18. Ne2 Ng8 19. Qf4 Qxf4 20. Nxf4 Nf6 21. Nd2
g5 22. Ne2 Nh5 23. b4 f4 24. bxa5 bxa5 25. c4 Be6 26. c5 fxe3 27. fxe3 Nf6 28.
Nb3 Ng4 29. Kd2 Rhf8 30. Nxa5 Rf2 31. Rhg1 Rdf8 32. Nc6 Kd7 33. Ne5+ Nxe5 34.
dxe5 Ra8 35. Ke1 Rf5 36. Nd4 Rxe5 37. c6+ Kd6 38. Ke2 Bf7 39. Rgb1 Be8 40. Nb5+
Kxc6 41. Rc1+ Kb6 42. Nxc7 Rc8 43. a5+ Kb7 44. a6+ Ka7 45. Rab1 Rb8 46. g3 Re7
47. Nxe8 Rexe8 48. Rc7+ Kxa6 49. Rc6+ Ka5 50. Rc5+ Ka4 51. Ra1+ Kb4 52. Raa5
Rec8 53. Rxd5 Rc2+ 54. Kd1 Rxh2 55. Rxg5 Kc4 56. Rad5 *
Position (FEN): 1r6/7p/8/3R2R1/2k1p3/4P1P1/7r/3K4 b - - 2 56
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 663
Best move: Rb1#