Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. f4 b5 6. a3 Bb7 7. Bd3 Bc5 8. Nb3
Bb6 9. Qf3 Nf6 10. Be3 O-O 11. Nc3 Nc6 12. Qf2 Ng4 13. Bxb6 Nxf2 14. Bxd8 Nxd3+
15. cxd3 Rfxd8 16. Kd2 b4 17. axb4 Nxb4 18. Nc5 Bc6 19. h4 a5 20. Na2 Nxa2 21.
Rxa2 Rdc8 22. Rc1 h6 23. Na4 Rcb8 24. Rc5 Bxa4 25. Rxa4 Rxb2+ 26. Ke3 Rxg2 27.
Raxa5 Rxa5 28. Rxa5 Kf8 29. h5 Rh2 30. Kf3 Rh3+ 31. Ke2 Ke7 32. d4 Rh4 33. Kf3
Rh1 34. Kg4 Re1 35. e5 Re4 36. d5 exd5 37. Rxd5 Ke6 38. Rd6+ Ke7 39. Kf5 Re1
40. Rd2 Rh1 41. Kg4 Ke6 42. Rd6+ Ke7 43. Ra6 Rh2 44. f5 Rh1 45. f6+ Kf8 *
Position (FEN): 5k2/3p1pp1/R4P1p/4P2P/6K1/8/8/7r w - - 1 46
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 642
Best move: Ra8#