Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Bc4 O-O 5. O-O Re8 6. d3 h6 7. a3 Ba5 8. Bd2
c6 9. Ne2 Bb6 10. Be3 Bc7 11. Ng3 d5 12. exd5 cxd5 13. Ba2 Nc6 14. Qd2 Kh7 15.
Rfe1 d4 16. Bg5 hxg5 17. Nxg5+ Kg8 18. Nxf7 Qe7 19. Nd6+ Be6 20. Nxe8 Rxe8 21.
Bxe6+ Qxe6 22. Qg5 Ne7 23. f4 Ned5 24. fxe5 Ng4 25. Nf5 g6 26. Nxd4 Bb6 27. c3
Kg7 28. Re4 Nh6 29. Kh1 Bxd4 30. cxd4 Nf5 31. Rf1 Rh8 32. Rg4 Nde3 33. Rc1 Nxg4
34. Rc7+ Kf8 35. Qd8+ Qe8 36. Qxe8+ Kxe8 37. Rc8+ Kf7 38. Rxh8 Nxd4 39. Rb8
Nxe5 40. Rxb7+ Ke6 41. Rxa7 Nxd3 42. b4 Ne2 43. b5 *
Position (FEN): 8/R7/4k1p1/1P6/8/P2n4/4n1PP/7K b - - 0 43
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 909
Best move: Nf2#