Chess puzzle (Checkmate)
Moves: 1. d4 e6 2. c4 d5 3. Nc3 Nf6 4. Bf4 a6 5. c5 b6 6. b4 a5 7. a3 bxc5 8. bxc5 Ba6
9. h3 Be7 10. Nf3 O-O 11. g4 Nc6 12. Bg2 Na7 13. O-O Nb5 14. Nxb5 Bxb5 15. a4
Bc4 16. Rb1 c6 17. Re1 Ne4 18. Qc2 Bg5 19. Bxg5 Nxg5 20. Ne5 f5 21. gxf5 Rxf5
22. Nxc4 dxc4 23. Qxc4 Qf6 24. Rf1 Rf8 25. f3 Qg6 26. Kh2 Kh8 27. Rb6 e5 28. d5
R5f6 29. dxc6 Rxc6 30. Rxc6 Qxc6 31. e4 Rc8 32. Rc1 Ne6 33. Bf1 Nd4 34. Qd3 Qf6
35. Rc3 Qf4+ 36. Kg2 Qg5+ 37. Kf2 Qh4+ 38. Kg2 Qg5+ 39. Kh1 Ne6 40. Qd7 Rg8 41.
Qxe6 h6 42. c6 Qf4 43. Bg2 Qd2 44. Qc4 Qe1+ 45. Bf1 Qg3 46. c7 Rc8 47. Qe2 Qf4
48. Bg2 Qf7 49. Qc2 Qd7 50. Rc5 Kg8 51. Rxe5 Rxc7 52. Qb3+ Kh7 53. Rd5 Rc1+ 54.
Kh2 Qc7+ 55. e5 Qf7 56. Qb2 *
Position (FEN): 8/5qpk/7p/p2RP3/P7/5P1P/1Q4BK/2r5 b - - 2 56
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1027
Best move: Qf4#