Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. e3 d5 3. f4 Bf5 4. Nf3 e6 5. Bd3 Bxd3 6. Qxd3 Nbd7 7. O-O c5 8. c3
c4 9. Qe2 Ne4 10. Bd2 Ndf6 11. Be1 Qb6 12. Bh4 Be7 13. Re1 O-O-O 14. Na3 Bxa3
15. bxa3 Nxc3 16. Qc2 Qa5 17. Bxf6 gxf6 18. Nd2 Rdg8 19. Rec1 Ne2+ 20. Kf2 Nxc1
21. Rxc1 Kb8 22. a4 h5 23. Rb1 h4 24. Rb5 Qa6 25. f5 Rg5 26. fxe6 fxe6 27. Nf3
Rf5 28. e4 dxe4 29. Qxe4 Rxb5 30. axb5 Qxb5 31. Qxe6 Qb2+ 32. Ke3 Qc3+ 33. Kf4
Qc1+ 34. Kg4 Qh6 35. Kh3 Ka8 36. Qxc4 Qh7 37. Qe6 Qg7 38. d5 Rg8 39. Nxh4 Rh8
40. d6 Qg5 41. g3 f5 42. d7 Rxh4+ 43. gxh4 *
Position (FEN): k7/pp1P4/4Q3/5pq1/7P/7K/P6P/8 b - - 0 43
Black to move.
Themes:  Endgame, Queen Endgame Mate in 1 
Puzzle rating: 1199
Best move: Qg4#