Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nf6 3. Bc4 Nxe4 4. Qe2 Nd6 5. Qxe5+ Qe7 6. Qxe7+ Bxe7 7. Bb3
O-O 8. O-O b6 9. Bd5 c6 10. Bb3 Bb7 11. c3 c5 12. Bd1 Bf6 13. Re1 Nc6 14. d3
Rfe8 15. Bf4 Rxe1+ 16. Nxe1 Be5 17. Bxe5 Nxe5 18. Nd2 Re8 19. Kf1 Ba6 20. c4
Nc6 21. Bg4 f5 22. Bh3 g5 23. g3 g4 24. Bg2 Nd4 25. Nb3 Ne2 26. Nc1 Nd4 27. Rb1
b5 28. b3 b4 29. h3 h5 30. Rb2 Bb7 31. Bxb7 Nxb7 32. hxg4 hxg4 33. Ne2 Nxe2 34.
Rxe2 Rxe2 35. Kxe2 Kg7 36. Nc2 d6 37. Ke3 Kf6 38. Kf4 Nd8 39. Ke3 Ne6 40. a3 a5
41. axb4 axb4 42. d4 Nd8 43. d5 Nf7 44. Kf4 Ne5 45. Ne3 *
Position (FEN): 8/8/3p1k2/2pPnp2/1pP2Kp1/1P2N1P1/5P2/8 b - - 4 45
Black to move.
Themes:  Endgame, Knight Endgame Mate in 1 
Puzzle rating: 990
Best move: Nd3#