Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Bc4 Nc6 3. Bxf7+ Kxf7 4. d3 Nf6 5. Nf3 Bc5 6. Ng5+ Ke7 7. c3 h6 8.
Nf3 Re8 9. b4 Bb6 10. a4 a6 11. O-O d6 12. a5 Ba7 13. Be3 Bg4 14. Bxa7 Rxa7 15.
h3 Bxf3 16. Qxf3 Rf8 17. Nd2 Nd5 18. Qg4 Nxc3 19. Rfc1 Nb5 20. Qxg7+ Rf7 21.
Qxh6 Nbd4 22. Qg5+ Kd7 23. Qxd8+ Nxd8 24. Rf1 N8e6 25. g3 Ne2+ 26. Kg2 Ra8 27.
Rae1 N6d4 28. h4 Rg8 29. Kh1 Kc6 30. Kh2 Kb5 31. Rb1 Nf3+ 32. Nxf3 Rxf3 33. Rb2
Nxg3 34. Rg1 Rg4 35. fxg3 Rxd3 36. Re2 Kxb4 37. Kh3 Rg7 38. Rb2+ Kxa5 39. Ra1+
Ra3 *
Position (FEN): 8/1pp3r1/p2p4/k3p3/4P2P/r5PK/1R6/R7 w - - 2 40
White to move.
Themes: Hanging Piece Endgame, Rook Endgame Mate in 1 
Puzzle rating: 822
Best move: Rxa3#