Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 e6 3. Nc3 h6 4. cxd5 exd5 5. Nf3 Nf6 6. Bf4 Bf5 7. Rc1 a6 8. e3
Nc6 9. Qb3 Rb8 10. Be2 Be7 11. O-O O-O 12. Ne5 Nxe5 13. Bxe5 Be6 14. Na4 Bd6
15. Bxd6 Qxd6 16. Nc5 Bc8 17. Bxa6 b6 18. Bxc8 Rfxc8 19. Nd3 c5 20. dxc5 bxc5
21. Qd1 c4 22. Nf4 Rxb2 23. Ne2 Rxa2 24. Nd4 Ne4 25. Nb5 Qc5 26. Nc3 Nxc3 27.
Rxc3 Rb8 28. g3 Rbb2 29. Qc1 Qd6 30. Qd1 Qf6 31. Rc1 Rxf2 32. Qxd5 Rg2+ 33.
Qxg2 Rxg2+ 34. Kxg2 Qe5 35. Rfe1 Qb2+ 36. Kg1 c3 37. Rb1 Qd2 38. Rbd1 Qb2 39.
Rb1 Qa3 40. Ra1 Qc5 41. Rac1 Kh7 42. Kf2 Kg6 43. Re2 Kf5 44. Rec2 Qd6 45. Rxc3
Qd2+ 46. Kg1 Kg4 47. e4 Kh3 48. R3c2 Qe3+ 49. Kf1 Qxe4 50. Kg1 g5 51. Rf2 f5
52. Rcf1 Qe3 53. Kh1 Qe4+ 54. Kg1 f4 55. gxf4 gxf4 56. Rxf4 *
Position (FEN): 8/8/7p/8/4qR2/7k/7P/5RK1 b - - 0 56
Black to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 823
Best move: Qg2#