Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 d5 3. Nf3 e6 4. Nc3 Be7 5. Bg5 O-O 6. e3 b6 7. Rc1 Bb7 8. cxd5
Nxd5 9. Nxd5 Bxd5 10. Bxe7 Qxe7 11. Bd3 h6 12. O-O Qd6 13. Qc2 Bxf3 14. gxf3 c6
15. Be4 Rc8 16. f4 f5 17. Bf3 Rc7 18. Rfd1 Na6 19. a3 Rac8 20. Qc4 Nb8 21. Qf1
Nd7 22. Qg2 Nf6 23. h3 Nd5 24. Kh2 b5 25. h4 b4 26. axb4 Qxb4 27. Qg6 Qe7 28.
h5 Qh4+ 29. Kg2 Qf6 30. Qxf6 Nxf6 31. Rc5 Rb8 32. Rd2 Nd5 33. Bxd5 exd5 34.
Rdc2 Rbc8 35. b4 Kf7 36. Ra5 Ke7 37. b5 cxb5 38. Rxc7+ Rxc7 39. Rxb5 Kd6 40.
Kf3 Kc6 41. Rc5+ Kb6 42. Rxd5 a5 43. Rd6+ Kb5 44. Rd8 a4 45. Ke2 a3 46. Ra8 Kb4
47. Kd3 Rc3+ 48. Kd2 Rc7 49. d5 Rd7 50. Rb8+ Ka4 51. Kc3 Rxd5 52. Kc4 Ra5 *
Position (FEN): 1R6/6p1/7p/r4p1P/k1K2P2/p3P3/5P2/8 w - - 2 53
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 663
Best move: Rb4#