Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. e3 Nf6 3. f4 Nc6 4. Nd2 e5 5. fxe5 Nd7 6. g3 Be7 7. Nh3 O-O 8. Nf2
Nb6 9. c3 f6 10. exf6 Bxf6 11. Bd3 Be6 12. Qh5 h6 13. Qg6 Qd7 14. Qh7+ Kf7 15.
Bg6+ Ke7 16. O-O Rh8 17. Qxh8 Rxh8 18. e4 Rf8 19. e5 Bg5 20. Nb3 Bxc1 21. Raxc1
Nc4 22. Nc5 Qc8 23. b3 Ne3 24. Rfe1 Ng4 25. Re2 b6 26. Ncd3 Nxf2 27. Rxf2 Rxf2
28. Kxf2 Qf8+ 29. Kg2 Kd7 30. Rf1 Qa3 31. Rf2 a5 32. Nf4 a4 33. Nxe6 Kxe6 34.
Bf7+ Kd7 35. Bxd5 axb3 36. axb3 Qc1 37. Rf7+ Ne7 38. e6+ Ke8 39. Bc6+ Kd8 *
Position (FEN): 3k4/2p1nRp1/1pB1P2p/8/3P4/1PP3P1/6KP/2q5 w - - 3 40
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 400
Best move: Rf8#