Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. Nf3 e5 7. d5 a5 8. g4 Nfd7
9. Be3 Nc5 10. Be2 f5 11. gxf5 gxf5 12. h4 Nba6 13. h5 f4 14. Bd2 Kh8 15. h6
Bf6 16. a3 Bg4 17. Qc2 Rg8 18. O-O-O Qd7 19. Rdg1 a4 20. Kb1 Nb3 21. Be1 Nac5
22. Nd2 Nd4 23. Bxg4 Rxg4 24. Qd1 Rag8 25. Rxg4 Qxg4 26. f3 Qg2 27. Bh4 Bxh4
28. Rxh4 Qf2 29. Rg4 Rxg4 30. fxg4 f3 31. Ka2 Qe3 32. Nf1 Qxh6 33. Nxa4 Nxe4
34. Nc3 Qf4 35. Nxe4 Qxe4 36. Qa4 Qxg4 37. Qe8+ Kg7 38. Ne3 Qg6 39. Qe7+ Qf7
40. Qg5+ Kf8 41. Qd8+ Qe8 42. Qf6+ Kg8 43. Qg5+ Kf7 44. Ng4 Qe7 45. Nh6+ Kf8 *
Position (FEN): 5k2/1pp1q2p/3p3N/3Pp1Q1/2Pn4/P4p2/KP6/8 w - - 18 46
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 897
Best move: Qg8#