Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. g3 Nc6 3. Bg2 Bc5 4. Nc3 Nf6 5. d3 d6 6. Na4 Bb6 7. Nxb6 axb6 8. f4
Bg4 9. Nf3 Qd7 10. h3 Bxf3 11. Qxf3 Nd4 12. Qf2 exf4 13. Bxf4 c5 14. c3 Nc6 15.
O-O O-O 16. Kh2 Ne5 17. Qe2 Qe6 18. a3 Rae8 19. Bg5 Nfd7 20. h4 f6 21. Bh3 Qb3
22. Bf4 b5 23. d4 cxd4 24. cxd4 Ng6 25. Bxd7 Nxf4 26. Rxf4 Re7 27. Bh3 d5 28.
e5 Rfe8 29. Rf3 Qa4 30. Qd3 fxe5 31. dxe5 Rxe5 32. Raf1 Re2+ 33. R3f2 Rxf2+ 34.
Rxf2 Qc4 35. Qf3 d4 36. Qxb7 d3 37. Bf1 Qd4 38. Qf7+ Kh8 39. Qf8+ Rxf8 *
Position (FEN): 5r1k/6pp/8/1p6/3q3P/P2p2P1/1P3R1K/5B2 w - - 0 40
White to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 600
Best move: Rxf8#