Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. e3 Nf6 3. Nc3 Bf5 4. Nf3 e6 5. Ne5 Bb4 6. Bd2 Nbd7 7. Bb5 O-O 8.
Nxd7 Nxd7 9. Bxd7 Qxd7 10. O-O c5 11. Ne2 Bxd2 12. Qxd2 cxd4 13. Nxd4 Be4 14.
f3 Bg6 15. c3 e5 16. Ne2 Rad8 17. a3 Qb5 18. a4 Qc4 19. Ng3 d4 20. e4 dxc3 21.
Qxc3 Qd4+ 22. Qxd4 exd4 23. Rfd1 f5 24. exf5 Bxf5 25. Nxf5 Rxf5 26. Rd3 Kf7 27.
b4 a6 28. Rad1 Rfd5 29. Kf2 Kf6 30. f4 g6 31. g4 b5 32. a5 h5 33. h3 g5 34. Kf3
gxf4 35. Kxf4 hxg4 36. hxg4 R8d7 37. g5+ Kg6 38. Ke4 Rxg5 39. Rxd4 Rg4+ 40. Ke3
Rg3+ 41. Kf4 Rxd4+ 42. Rxd4 Rb3 43. Ke5 Rc3 44. Rd6+ Kf7 45. Rxa6 Rc4 46. Ra7+
Ke8 47. a6 Rxb4 48. Ke6 Kd8 49. Kd6 Kc8 *
Position (FEN): 2k5/R7/P2K4/1p6/1r6/8/8/8 w - - 4 50
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1830
Best move: Ra8#