Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. c3 h6 6. d4 exd4 7. cxd4 Bb6 8. e5
Nh7 9. d5 Ne7 10. d6 Nc6 11. dxc7 Qxc7 12. Qb3 O-O 13. Bf4 Na5 14. Qd1 Qxc4 15.
Bg3 Qe6 16. b4 Nc6 17. b5 Ne7 18. a4 Nf5 19. Bf4 Bc7 20. Bd2 Bxe5 21. Re1 d6
22. Bc3 Qf6 23. Bxe5 dxe5 24. Nbd2 Rd8 25. Qb3 Be6 26. Qb4 Ng5 27. Nxg5 Qxg5
28. Ne4 Qg6 29. Nc5 Nh4 30. Qxh4 Rac8 31. Nxe6 Qxe6 32. Qg3 Rc2 33. Rab1 Rdd2
34. Rf1 Qa2 35. Rbe1 f6 36. Ra1 Qb2 37. Rae1 Kh8 38. Qe3 Qb4 39. Qxa7 Rxf2 40.
Rxf2 Qxe1+ 41. Rf1 Qb4 42. Qa8+ Kh7 43. Qxb7 Qc5+ 44. Kh1 Qe3 45. a5 Rc1 46.
Rxc1 *
Position (FEN): 8/1Q4pk/5p1p/PP2p3/8/4q3/6PP/2R4K b - - 0 46
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 815
Best move: Qxc1#