Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. f3 axb5 6. e4 d6 7. Bxb5+ Bd7 8. Nc3
g6 9. Nge2 Bg7 10. Bxd7+ Nbxd7 11. O-O O-O 12. a4 Qb6 13. Kh1 Rfb8 14. Qc2 Ne5
15. Nb5 Rb7 16. Be3 Ne8 17. Nec3 Nc4 18. Bg1 Na5 19. f4 Nc7 20. f5 Na6 21. fxg6
hxg6 22. Qf2 Bf6 23. Qg3 Be5 24. Qg4 Nb3 25. Rad1 Nb4 26. Qf3 Nd4 27. Qxf7+ Kh8
28. Qxg6 e6 29. dxe6 Rg7 30. Qh5+ Rh7 31. Qg5 Rg8 32. Qe3 Nbc2 33. Qf2 Bg3 34.
Qf6+ Rgg7 35. e7 Qb8 36. Qf8+ Rg8 37. Qxg8+ Kxg8 38. Rf8+ Qxf8 39. exf8=Q+ Kxf8
40. a5 Be5 41. a6 Ne2 42. a7 *
Position (FEN): 5k2/P6r/3p4/1Np1b3/4P3/2N5/1Pn1n1PP/3R2BK b - - 0 42
Black to move.
Themes: Pin Middlegame Mate in 1, Smothered Mate 
Puzzle rating: 1337
Best move: Ng3#