Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. Bg5 d6 6. h3 O-O 7. O-O h6 8. Bh4
Na5 9. Bb3 Nxb3 10. axb3 Be6 11. Nc3 c6 12. d4 exd4 13. Nxd4 Re8 14. Na4 Bxd4
15. Qxd4 b5 16. Nc3 c5 17. Qe3 b4 18. Ne2 g5 19. Bxg5 hxg5 20. Qxg5+ Kf8 21.
Ng3 Ng8 22. Qh5 Qf6 23. Nf5 Bxf5 24. Qxf5 Qxf5 25. exf5 Re5 26. g4 Nf6 27. Rfe1
Rxe1+ 28. Rxe1 Re8 29. Ra1 Re7 30. g5 Ne4 31. h4 d5 32. Rd1 d4 33. Kg2 Nd6 34.
f6 Re4 35. Kh3 Nf5 36. Ra1 Rxh4+ 37. Kg2 Rg4+ 38. Kf3 Rxg5 39. Rxa7 Rg6 *
Position (FEN): 5k2/R4p2/5Pr1/2p2n2/1p1p4/1P3K2/1PP2P2/8 w - - 1 40
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 538
Best move: Ra8#