Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. c3 Nf6 3. Nf3 Nxe4 4. d4 c4 5. d5 Nf6 6. Bxc4 g6 7. O-O Bg7 8. Re1
O-O 9. Bg5 a6 10. a4 d6 11. Nbd2 Nbd7 12. b4 Nb6 13. Bb3 Re8 14. c4 Bg4 15. h3
Bxf3 16. Qxf3 Nbd7 17. a5 Ne5 18. Qe2 b6 19. f4 Ned7 20. axb6 Qxb6+ 21. Kh1 h6
22. Bh4 Qxb4 23. Ba4 Qb7 24. Reb1 Qc7 25. Bc6 Rab8 26. Rxa6 Rxb1+ 27. Nxb1 Nb8
28. Ra8 Nxc6 29. Rxe8+ Nxe8 30. dxc6 Nf6 31. Bxf6 Bxf6 32. Qe4 Qb6 33. Nd2 e6
34. Nf3 Kf8 35. h4 h5 36. Ng5 Ke7 37. Nf3 Kd8 38. Nd2 Kc7 39. Kh2 Qxc6 40.
Qxc6+ Kxc6 41. Kh3 Kc5 42. g4 Kd4 43. g5 Bd8 44. Kg3 Kd3 45. Nf3 Kxc4 46. Nd2+
Kd3 47. Nb3 Ke4 48. Nd2+ Kf5 49. Nc4 d5 *
Position (FEN): 3b4/5p2/4p1p1/3p1kPp/2N2P1P/6K1/8/8 w - - 0 50
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1628
Best move: Nd6#