Chess puzzle (Checkmate)
Moves: 1. d4 c6 2. Bf4 d5 3. Nf3 Bf5 4. e3 Nd7 5. Bd3 e6 6. Bxf5 exf5 7. Qd3 g6 8. O-O
Ngf6 9. c4 Bg7 10. Nc3 h6 11. Bd6 dxc4 12. Qxc4 Nb6 13. Qc5 Nfd5 14. Rfe1 Kd7
15. a4 Bf8 16. Ne5+ Ke6 17. Bxf8 Qxf8 18. Qxf8 Rhxf8 19. a5 Nd7 20. Nxd7 Kxd7
21. Na4 f4 22. e4 Nb4 23. Nc5+ Kc7 24. Rac1 Rad8 25. Rc4 b6 26. axb6+ axb6 27.
Nb3 Nd3 28. Rb1 Rfe8 29. f3 Rd7 30. d5 b5 31. Rxc6+ Kb7 32. Nc5+ Nxc5 33. Rxc5
Kb6 34. Rbc1 b4 35. b3 Ree7 36. Rc6+ Kb7 37. R1c5 Rc7 38. Rb5+ Kc8 39. Rxb4
Rxc6 40. dxc6 Kc7 41. Rb7+ Kd6 42. Rb6 Rc7 43. Rb7 Rxc6 44. Rxf7 Rc1+ 45. Kf2
Rc2+ 46. Kf1 Rb2 47. Rxf4 Ke5 48. Rf8 Kd4 49. Rf6 Ke3 50. h3 *
Position (FEN): 8/8/5Rpp/8/4P3/1P2kP1P/1r4P1/5K2 b - - 0 50
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1132
Best move: Rb1#