Chess puzzle (Checkmate)
Moves: 1. d4 d6 2. Bf4 Nf6 3. e3 Nbd7 4. Nd2 e5 5. dxe5 dxe5 6. Bg3 c6 7. Bd3 Bd6 8.
Qe2 Qe7 9. e4 O-O 10. Ngf3 Nc5 11. Bc4 Bg4 12. h3 Bh5 13. O-O b5 14. Bb3 a6 15.
c4 b4 16. Bc2 Ne6 17. Rad1 Nd4 18. Qd3 Rad8 19. Rde1 Bc5 20. Nxd4 Bxd4 21. Qb3
Bxb2 22. Qxb2 Rxd2 23. Bd1 Bxd1 24. Qxd2 Bh5 25. f3 Rd8 26. Qe3 c5 27. f4 exf4
28. Qxf4 Bg6 29. e5 Nh5 30. Qe3 Rd4 31. Rc1 Rd3 32. Qf2 Nxg3 33. Rfd1 Rxd1+ 34.
Rxd1 Nf5 35. g4 Nd4 36. Re1 h5 37. Qg2 hxg4 38. hxg4 Qh4 39. Qa8+ Kh7 40. Qg2
Qxe1+ 41. Kh2 Be4 42. Qh3+ Kg8 43. Qg3 Qd2+ 44. Kh3 Qh6+ 45. Qh4 Bg2+ 46. Kg3
Ne2+ 47. Kxg2 Qh7 *
Position (FEN): 6k1/5ppq/p7/2p1P3/1pP3PQ/8/P3n1K1/8 w - - 1 48
White to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 872
Best move: Qd8#