Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nc3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. Nf3 Nf6 6. O-O e6 7. d3 Be7 8.
Bg5 O-O 9. d4 cxd4 10. Nxd4 e5 11. Ndb5 a6 12. Na3 b5 13. Bxf6 Bxf6 14. Nd5 Qd8
15. c4 b4 16. Nxb4 a5 17. Nd5 Nc6 18. Nc2 Rb8 19. b3 a4 20. Rb1 axb3 21. axb3
Na5 22. Qf3 Be7 23. Rfc1 Qd7 24. Na3 Bd8 25. b4 Nc6 26. c5 dxc5 27. bxc5 Nd4
28. Qd3 Rxb1 29. Rxb1 Ba5 30. Nc2 Qg4 31. Nxd4 exd4 32. Qxd4 Qe2 33. Ne7+ Kh8
34. Nf5 f6 35. Nd6 Qc2 36. Ra1 Bc3 37. Nf7+ Kg8 38. Qd5 Bxa1 39. Nh6+ Kh8 40.
Qg8+ Rxg8 *
Position (FEN): 6rk/6pp/5p1N/2P5/4P3/8/2q2PPP/b5K1 w - - 0 41
White to move.
Themes:  Endgame Mate in 1, Smothered Mate 
Puzzle rating: 994
Best move: Nf7#