Chess puzzle (Checkmate)
Moves: 1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h5 5. Bg5 Qd7 6. Bd3 g6 7. Ne2 Nh6 8. Ng3
Bxd3 9. Qxd3 Na6 10. Nd2 Nf5 11. Nxf5 Qxf5 12. Qxf5 gxf5 13. Ke2 Nc7 14. c4
O-O-O 15. c5 Ne6 16. Nf3 Kd7 17. b4 b5 18. a4 Nc7 19. axb5 Nxb5 20. Ra6 Bg7 21.
Rha1 Rc8 22. Kd3 Rc7 23. Bf4 e6 24. Ng5 Ke7 25. Nh3 Rb8 26. Bg5+ Kd7 27. Nf4
Rh8 28. Ne2 Rb7 29. Nc3 Nc7 30. b5 Rxb5 31. Nxb5 Nxb5 32. Rxa7+ Nxa7 33. Rxa7+
Ke8 34. Re7+ Kf8 35. Rc7 Ke8 36. Rxc6 Kd7 37. Ra6 Rb8 38. Ra7+ Ke8 39. c6 Bf8
40. c7 Rc8 41. Bd8 Be7 42. g3 Bxd8 43. cxd8=Q+ Rxd8 44. Ke3 Kf8 45. Kf4 Kg7 46.
Kg5 Rc8 47. Kxh5 Rc4 48. Kg5 Rxd4 49. h5 *
Position (FEN): 8/R4pk1/4p3/3pPpKP/3r4/6P1/5P2/8 b - - 0 49
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 661
Best move: Rg4#