Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. h3 d6 5. e3 O-O 6. Be2 c5 7. O-O Nc6 8. c3
Qb6 9. Qc1 Be6 10. Nbd2 h6 11. Nc4 Qc7 12. dxc5 Rfd8 13. cxd6 exd6 14. Rd1 Ne8
15. e4 Bxc4 16. Bxc4 Ne5 17. Nxe5 dxe5 18. Bxf7+ Qxf7 19. Rxd8 Rxd8 20. Bxh6
Nf6 21. Bg5 Rd6 22. Qe3 Nh5 23. Qxa7 Nf4 24. Qb8+ Bf8 25. a4 Qc4 26. Be7 Qxe4
27. Qxf8+ Kh7 28. Qf7+ Kh6 29. Qf8+ Kh7 30. Qxf4 exf4 31. Bxd6 f3 32. gxf3 Qxf3
33. Bg3 Qe2 34. b4 Qb2 35. Rd1 Qxc3 36. Rd7+ Kh6 37. Rxb7 Qc6 38. Rb5 g5 39.
Re5 Qxa4 40. b5 Qa1+ 41. Kh2 Qb1 42. Rd5 Kh5 43. h4 Kg4 44. Rxg5+ Kf3 45. Rd5
Qf1 46. Rf5+ Kg4 47. Rf4+ Kh5 48. b6 Qb1 49. Rf6 Qb3 50. Rc6 Kg4 51. Rg6+ Kf3
52. h5 Qb1 53. Rf6+ Ke2 54. h6 Kf1 55. Rf4 Qxb6 56. Rh4 Qc6 57. h7 *
Position (FEN): 8/7P/2q5/8/7R/6B1/5P1K/5k2 b - - 0 57
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 900
Best move: Qg2#