Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 a6 7. Ba4 b5 8. Bb3
Na5 9. Nd5 Nxb3 10. Nxf6+ Bxf6 11. axb3 c6 12. c4 Bb7 13. Be3 Re8 14. Bc5 d6
15. Be3 d5 16. Qc2 d4 17. Bd2 c5 18. Ba5 Qd7 19. Bd2 b4 20. Ra5 Qc7 21. Bg5
Bxg5 22. Ra2 Bf6 23. Rfa1 a5 24. Qd2 Bd8 25. Ng5 Bxg5 26. Qxg5 f6 27. Qd2 Re6
28. Qe2 Rea6 29. Qg4 Bc8 30. Qh5 Qf7 31. Qf3 Qg6 32. h3 Kh8 33. h4 f5 34. exf5
Qxf5 35. Rxa5 Qxf3 36. gxf3 Rxa5 37. Re1 Bb7 38. Rxe5 Bxf3 39. Rf5 Ra1+ 40. Kh2
Rh1+ 41. Kg3 Bd1 42. Rxc5 Bxb3 43. Rb5 Ra4 *
Position (FEN): 7k/6pp/8/1R6/rpPp3P/1b1P2K1/1P3P2/7r w - - 2 44
White to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 675
Best move: Rb8#