Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Bd3 O-O 6. Nge2 c5 7. d5 e6 8. h3
exd5 9. exd5 Nbd7 10. f4 Re8 11. O-O a6 12. a4 h5 13. Bd2 Nh7 14. Ng3 h4 15.
Nh1 f5 16. Qf3 Ndf6 17. Nf2 Nh5 18. Rfe1 Bd7 19. Kh2 Ng3 20. Rxe8+ Qxe8 21. Re1
Qf7 22. b3 Re8 23. Ne2 Nxe2 24. Rxe2 Rxe2 25. Qxe2 Nf6 26. Nd1 Nh5 27. Be1 Nxf4
28. Qf3 Be5 29. Kh1 g5 30. Ne3 Bd4 31. Bc2 Qf6 32. Bxh4 Qe5 33. Bf2 b5 34. axb5
axb5 35. cxb5 Bxb5 36. Nxf5 Be2 37. Bxd4 cxd4 38. Qg3 d3 39. Qxg5+ Kf8 40. Qh6+
Ke8 41. Nxd6+ Kd7 42. Bxd3 Bxd3 43. Nc4 Qe1+ 44. Kh2 Qf2 45. Qg7+ Kd8 46. Ne5
Bf5 47. Nc6+ Kc8 48. Ne7+ Kb8 49. Nxf5 Ne2 50. Qg4 *
Position (FEN): 1k6/8/8/3P1N2/6Q1/1P5P/4nqPK/8 b - - 2 50
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1323
Best move: Qg1#