Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. Nf3 b6 3. d3 Bb7 4. Be2 Nf6 5. O-O Nc6 6. Bf4 h6 7. Nc3 g5 8. Bg3
Nh5 9. Be5 Nxe5 10. Nxe5 Nf4 11. Bh5 Nxh5 12. Qxh5 Qe7 13. f4 d6 14. Ng4 O-O-O
15. fxg5 d5 16. Ne5 dxe4 17. Nxf7 Rg8 18. Nxd8 Qxd8 19. Qf7 Bc5+ 20. Kh1 Rxg5
21. Qxe6+ Kb8 22. Nxe4 Bxe4 23. Qxe4 Qg8 24. g3 h5 25. Rf5 Rg4 26. Rf4 Rg7 27.
Re1 Re7 28. Qxe7 Bxe7 29. Rxe7 Qd5+ 30. Rfe4 Qxa2 31. Rc4 c5 32. b3 Qa1+ 33.
Kg2 Qf6 34. Re8+ Kb7 35. Ree4 Qc6 36. Kh3 a5 37. Ra4 Ka6 38. Kh4 b5 39. Ra2 c4
40. bxc4 bxc4 41. Rxc4 Qf6+ 42. Kxh5 Qf3+ 43. Kh4 Qf6+ 44. Kh3 Qf1+ 45. Kg4
Qe2+ 46. Kf4 Qd2+ 47. Kf3 Qd1+ 48. Ke4 Qh1+ 49. Kd4 Qxh2 50. Rc6+ Kb7 51. Rc5
Qf2+ 52. Kc4 Qf7+ 53. Rd5 Qc7+ 54. Kb3 Qb6+ 55. Ka3 *
Position (FEN): 8/1k6/1q6/p2R4/8/K2P2P1/R1P5/8 b - - 11 55
Black to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 912
Best move: Qb4#