Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Bg5 b6 3. Bxf6 gxf6 4. e3 Bb7 5. Nf3 e6 6. Nbd2 c5 7. c3 f5 8. g3
Na6 9. Bg2 Nc7 10. O-O Bg7 11. dxc5 bxc5 12. Qb3 Rb8 13. Qc2 O-O 14. Rad1 Nd5
15. Nc4 Ba6 16. Nfd2 Nb6 17. b3 d5 18. Nb2 Bxf1 19. Bxf1 h5 20. h4 Qf6 21. Nb1
e5 22. Qe2 Qg6 23. c4 f4 24. Kh2 fxg3+ 25. fxg3 d4 26. Nd3 f5 27. exd4 cxd4 28.
Nxe5 Qh6 29. Nf3 f4 30. Ng5 fxg3+ 31. Kxg3 Rbe8 32. Qc2 Re3+ 33. Kg2 Qc6+ 34.
Kg1 Rf4 35. Qh7+ Kf8 36. Qxh5 Rg3+ 37. Kh2 Be5 38. Nh7+ Kg8 39. Qxe5 Rf2+ 40.
Kxg3 *
Position (FEN): 6k1/p6N/1nq5/4Q3/2Pp3P/1P4K1/P4r2/1N1R1B2 b - - 0 40
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1111
Best move: Qf3#