Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4 8. Nxd4
Nxd4 9. Bxd4 Be7 10. Qd2 Bc5 11. O-O-O a6 12. Ne2 Qb6 13. Bxc5 Nxc5 14. Qd4 Nd7
15. Qxb6 Nxb6 16. Nd4 Bd7 17. Bd3 O-O 18. g4 Na4 19. f5 b5 20. g5 g6 21. fxg6
fxg6 22. Rdf1 Nc5 23. Be2 Ne4 24. Bd3 Nxg5 25. h4 Nf7 26. h5 Nxe5 27. Re1 Nxd3+
28. cxd3 Rac8+ 29. Kd2 g5 30. h6 Kh8 31. Nxe6 Bxe6 32. Rxe6 Rf2+ 33. Ke3 Rxb2
34. Rxa6 Rg8 35. Rg1 g4 36. a4 Rb4 37. a5 Ra4 38. Ra7 g3 39. Rg2 b4 40. Kf3 Ra3
41. Ke3 b3 42. Kf3 Ra2 43. Rxg3 Rxg3+ 44. Kxg3 Ra3 *
Position (FEN): 7k/R6p/7P/P2p4/8/rp1P2K1/8/8 w - - 1 45
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 761
Best move: Ra8#