Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Nf3 e6 3. Nbd2 c5 4. c4 cxd4 5. Nxd4 dxc4 6. Qa4+ Bd7 7. Qxc4 Nc6
8. Nxc6 Bxc6 9. e3 Nf6 10. b4 a6 11. a4 Be7 12. Bb2 O-O 13. f3 Rc8 14. Qd3 Qb6
15. Nc4 Qxb4+ 16. Bc3 Qc5 17. Qd4 Qh5 18. Be2 Qg6 19. O-O Bd5 20. Ne5 Qc2 21.
Bd2 Bc5 22. Qd3 Qxd3 23. Bxd3 Ba7 24. Kh1 h6 25. e4 Bc6 26. Bc3 Nh5 27. Nc4 b5
28. axb5 Bxb5 29. Bb4 Ra8 30. Bxf8 Kxf8 31. Ne5 f6 32. Bxb5 axb5 33. Nc6 Rc8
34. Nxa7 Rc2 35. Nxb5 Nf4 36. Rg1 Ne2 37. Rgd1 Nf4 38. Rg1 Kf7 39. Rae1 Ng6 40.
Nd6+ Ke7 41. Nb5 Ne5 42. f4 Nd3 43. Rd1 *
Position (FEN): 8/4k1p1/4pp1p/1N6/4PP2/3n4/2r3PP/3R2RK b - - 2 43
Black to move.
Themes:  Endgame Mate in 1, Smothered Mate 
Puzzle rating: 644
Best move: Nf2#