Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 Qf6 6. Qd2 dxc6 7. Bd3 Ne7
8. O-O O-O 9. Qg5 Bd4 10. c3 h6 11. Qg3 Be5 12. f4 Bd4+ 13. cxd4 Qxd4+ 14. Rf2
Be6 15. Nc3 Rad8 16. Be3 Qxd3 17. Rd1 Qa6 18. Bd4 f6 19. f5 Bxa2 20. Bxf6 Rxf6
21. Rxd8+ Kh7 22. Qxc7 Ng8 23. Nxa2 Qxa2 24. Qxb7 Qb1+ 25. Rf1 Qxe4 26. Qxa7
Rxf5 27. Rxf5 Qxf5 28. Rd1 Qc2 29. Qa1 Qc5+ 30. Kh1 Nf6 31. Rc1 Qb6 32. Qb1+
Kh8 33. Qc2 Ng4 34. Qxc6 Nf2+ 35. Kg1 Nh3+ 36. Kh1 Qg1+ 37. Rxg1 *
Position (FEN): 7k/6p1/2Q4p/8/8/7n/1P4PP/6RK b - - 0 37
Black to move.
Themes:  Endgame Mate in 1, Smothered Mate 
Puzzle rating: 851
Best move: Nf2#