Chess puzzle (Checkmate)
Moves: 1. c4 Nf6 2. e4 c5 3. f4 g6 4. d3 Bg7 5. Nf3 d6 6. Be2 Nc6 7. O-O b6 8. Nc3 e6
9. a3 O-O 10. Bd2 Bb7 11. Rc1 Re8 12. h3 Nd7 13. Be1 Ne7 14. Qc2 Nf8 15. Bg3 d5
16. cxd5 exd5 17. e5 Nf5 18. Bf2 Ne6 19. Nb5 Bf8 20. Qd2 a6 21. Nc3 d4 22. Ne4
Be7 23. g4 Nfg7 24. Bg3 f5 25. exf6 Bxf6 26. Nxf6+ Qxf6 27. Ne5 Qe7 28. Bf3 Rf8
29. Bxb7 Qxb7 30. Kh2 Rae8 31. b4 Kh8 32. Rf3 Rd8 33. Rcf1 cxb4 34. Qxb4 a5 35.
Qb1 Nc5 36. Qd1 Qd5 37. f5 g5 38. f6 Nge6 39. Qb1 Na4 40. Qc2 Nc3 41. Qb2 b5
42. Qc1 Qa2+ 43. R1f2 Qd5 44. Rf5 Qb7 45. Qd2 h6 46. Ng6+ Kh7 47. Nxf8+ Rxf8
48. f7 Ng7 49. Rf6 Nd5 50. Qe1 Ne3 51. Qa1 Qd7 52. Qe1 Ne6 53. Be5 Qd5 54. Bg3
Nc5 55. Qxa5 Nxd3 56. R2f5 *
Position (FEN): 5r2/5P1k/5R1p/Qp1q1Rp1/3p2P1/P2nn1BP/7K/8 b - - 1 56
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 993
Best move: Qg2#