Chess puzzle (Checkmate)
Moves: 1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. d4 Bg4 5. Nc3 Nc6 6. Be3 e6 7. a3 Nf6 8. h3
Bh5 9. g4 Bg6 10. Bd3 Bd6 11. Ne5 Nd7 12. Nxc6 bxc6 13. Bxg6 hxg6 14. Qd2 Nf6
15. Bf4 Nxg4 16. Bxd6 Qxd6 17. O-O-O Nf6 18. Qg5 Rb8 19. f4 Rh5 20. Qg1 Qxf4+
21. Rd2 Rg5 22. Qd1 Rg2 23. Ne2 Qg5 24. h4 Qh6 25. Kb1 Ne4 26. Rd3 Nf2 27. Qf1
Nxd3 28. Qxg2 Nxb2 29. Ka2 Nc4 30. Rb1 Rxb1 31. Kxb1 Nxa3+ 32. Ka2 Nc4 33. Kb3
Qe3+ 34. Nc3 Na5+ 35. Kb4 Nc4 36. Qh2 Qxd4 37. Qb8+ Ke7 38. Qc7+ Kf6 39. Qd8+
Kf5 *
Position (FEN): 3Q4/p4pp1/2p1p1p1/3p1k2/1Knq3P/2N5/2P5/8 w - - 6 40
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 860
Best move: Qg5#