Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 d6 3. Nc3 e6 4. d4 cxd4 5. Nxd4 a6 6. Nf3 Nf6 7. Bg5 Be7 8. Bc4
Qc7 9. Bb3 O-O 10. O-O Nc6 11. Qd2 Rd8 12. Qe3 b5 13. Bxf6 Bxf6 14. Ng5 h6 15.
Nh3 Bb7 16. Nf4 Na5 17. Nh5 Bxc3 18. bxc3 Rac8 19. Qg3 g5 20. Qf3 Qxc3 21. Nf6+
Kg7 22. Nh5+ Kg6 23. Qg4 Qe5 24. Ng3 Qf4 25. Qh5+ Kg7 26. h4 Nxb3 27. axb3 Bxe4
28. hxg5 Bg6 29. Qxh6+ Kg8 30. Nh5 Bxh5 31. Qxh5 Qf5 32. g4 Qg6 33. Qh4 Kg7 34.
Kg2 Rh8 35. Qg3 Qxg5 36. Qxd6 Rxc2 37. Qd4+ f6 38. Qd7+ Kg6 39. Qd3+ f5 40.
Qxc2 *
Position (FEN): 7r/8/p3p1k1/1p3pq1/6P1/1P6/2Q2PK1/R4R2 b - - 0 40
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 810
Best move: Qxg4#