Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nc3 Bc5 3. Nf3 Nc6 4. Bb5 d6 5. O-O Nf6 6. d3 Bd7 7. Bg5 h6 8. Bh4
g5 9. Bg3 Qe7 10. Nd5 Nxd5 11. exd5 Nd4 12. Bxd7+ Qxd7 13. Nxd4 Bxd4 14. c3 Bb6
15. a4 a5 16. Qf3 O-O-O 17. b4 f5 18. h3 f4 19. Bh2 h5 20. bxa5 Bxa5 21. Qe4
Bxc3 22. Ra2 Bd4 23. Rb1 Rdg8 24. a5 g4 25. a6 b6 26. Bxf4 gxh3 27. g3 exf4 28.
Qxd4 fxg3 29. f3 h2+ 30. Kg2 h4 31. a7 h3+ 32. Kh1 Kb7 33. Qc4 g2+ 34. Kxh2
g1=Q+ 35. Rxg1 Rg2+ 36. Rgxg2 hxg2+ 37. Kxg2 Qh3+ 38. Kf2 Qh2+ 39. Ke3 Re8+ 40.
Kd4 *
Position (FEN): 4r3/Pkp5/1p1p4/3P4/2QK4/3P1P2/R6q/8 b - - 6 40
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1637
Best move: Qh8#