Chess puzzle (Checkmate)
Moves: 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Bc4 c6 5. a4 d5 6. exd5 cxd5 7. Bd3 e5 8.
dxe5 Nxe5 9. Nf3 Nxd3+ 10. Qxd3 Bd6 11. O-O O-O 12. Bg5 Be6 13. Rad1 h6 14. Bh4
Be7 15. Rfe1 Rc8 16. Nd4 Bg4 17. Nf5 Bb4 18. Nxh6+ gxh6 19. Qg3 Bxc3 20. bxc3
Rc4 21. Rd4 Rxd4 22. cxd4 Re8 23. Rxe8+ Qxe8 24. h3 Qe1+ 25. Kh2 Qe6 26. Bxf6
Qxf6 27. Qxg4+ Kh8 28. f3 Qc6 29. Qf4 Kg7 30. a5 a6 31. Qe5+ Kg8 32. Qb8+ Kg7
33. Qe5+ Kg8 34. h4 Qxc2 35. Qxd5 Qc7+ 36. Qe5 Qd7 37. Kg3 Kf8 38. Qf4 Ke7 39.
Qe5+ Kf8 40. Kf4 Kg8 41. Ke4 Qc6+ 42. Qd5 Qc2+ 43. Kf4 Qxg2 44. Qd8+ Kg7 45.
Qd5 Qh2+ 46. Ke3 Qg2 47. Qe5+ Kg8 48. Qe4 Qg1+ 49. Kf4 Qc1+ 50. Kf5 Qc8+ 51.
Kf4 Qd8 52. Ke3 Qf6 53. Qd3 Qg7 54. Kd2 Qf6 55. Qc3 Qe6 56. Kd3 Qf5+ 57. Kc4 *
Position (FEN): 6k1/1p3p2/p6p/P4q2/2KP3P/2Q2P2/8/8 b - - 27 57
Black to move.
Themes:  Endgame, Queen Endgame Dovetail Mate, Mate in 1 
Puzzle rating: 1393
Best move: Qb5#