Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Nf3 Nf6 3. Bf4 e6 4. e3 Bd6 5. Bg3 Ne4 6. Nbd2 Nxg3 7. hxg3 f5 8.
Ne5 Bxe5 9. dxe5 Qe7 10. Bd3 Nc6 11. f4 Bd7 12. c3 O-O-O 13. g4 g5 14. gxf5
exf5 15. Qh5 Rdg8 16. O-O-O gxf4 17. exf4 Rxg2 18. Bxf5 Kb8 19. Bxd7 Qxd7 20.
Rdg1 Rxg1+ 21. Rxg1 d4 22. Qg4 Qd8 23. e6 a5 24. f5 dxc3 25. bxc3 Qf6 26. Qg7
Qd8 27. f6 Re8 28. e7 Qd6 29. f7 Qa3+ 30. Kb1 Rxe7 31. f8=Q+ Ka7 32. Qf2+ b6
33. Qgf6 Ne5 34. c4 Qb4+ 35. Nb3 Nxc4 36. Rg7 Re1+ 37. Kc2 Na3+ 38. Kd3 Qe4+
39. Kd2 *
Position (FEN): 8/k1p3Rp/1p3Q2/p7/4q3/nN6/P2K1Q2/4r3 b - - 7 39
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 2055
Best move: Nb1#