Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. Bd2 cxd4 6. Nb5 Bxd2+ 7. Qxd2 Ne7 8.
Nd6+ Kf8 9. g4 Nbc6 10. f4 g6 11. Nf3 Kg7 12. Nxd4 Nxd4 13. Qxd4 Qa5+ 14. b4
Qb6 15. Qxb6 axb6 16. a4 Bd7 17. Bb5 Bxb5 18. Nxb5 Rhc8 19. Kd2 Rc4 20. Rhf1
Rxb4 21. Nd6 Rbxa4 22. Rxa4 Rxa4 23. Nxb7 Nc6 24. Nd6 Ra2 25. Ne8+ Kf8 26. Nf6
Nd4 27. Nd7+ Ke7 28. Nxb6 Nxc2 29. h4 Nb4+ 30. Ke3 Rh2 31. Nc8+ Kd7 32. Nd6
Rxh4 33. Rb1 Nc2+ 34. Kd2 Na3 35. Rb7+ Kc6 36. Rxf7 Rxg4 37. Ke2 Nc4 38. Ne8 d4
39. Kf3 Rh4 40. Rc7+ Kd5 *
Position (FEN): 4N3/2R4p/4p1p1/3kP3/2np1P1r/5K2/8/8 w - - 4 41
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1021
Best move: Nf6#