Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. d4 exd4 3. c3 d5 4. Qxd4 Nc6 5. Bb5 Bd7 6. Qxd5 Nf6 7. Qd3 Be7 8.
Nf3 O-O 9. O-O Re8 10. Re1 h6 11. Bf4 a6 12. Ba4 b5 13. Bc2 Bg4 14. Nd4 Nxd4
15. cxd4 Bb4 16. Nc3 Be6 17. d5 Bg4 18. e5 Bxc3 19. bxc3 Nxd5 20. Qh7+ Kf8 21.
Qh8+ Ke7 22. Qxg7 Nxf4 23. Qxg4 Ne6 24. Rad1 Qc8 25. Qh4+ Kf8 26. Qxh6+ Ke7 27.
Qf6+ Kf8 28. Bg6 Ng5 29. Bh5 Qe6 30. Qxg5 c5 31. Rd6 Qxd6 32. Bxf7 Kxf7 33. f4
Qg6 34. Qh4 Rg8 35. e6+ Ke8 36. g3 Rd8 37. e7 Rd7 38. Qh3 Qf7 39. a4 Rxe7 *
Position (FEN): 4k1r1/4rq2/p7/1pp5/P4P2/2P3PQ/7P/4R1K1 w - - 0 40
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 830
Best move: Qc8#