Chess puzzle (Checkmate)
Moves: 1. Nf3 Nc6 2. d4 d5 3. c4 e6 4. Nc3 Nf6 5. Bg5 h6 6. Bxf6 Qxf6 7. e3 Bb4 8. Bd3
dxc4 9. Bxc4 e5 10. dxe5 Nxe5 11. Nxe5 Qxe5 12. O-O Bxc3 13. bxc3 Qxc3 14. Qd5
Qf6 15. Rad1 O-O 16. Rd4 Be6 17. Qxb7 Rfb8 18. Qxc7 Rc8 19. Qb7 Rcb8 20. Qe4
Bxc4 21. Rxc4 Re8 22. Qc6 Qb2 23. Rc2 Qb4 24. Rfc1 Rac8 25. Qxc8 Rxc8 26. Rxc8+
Kh7 27. g3 Qd2 28. R1c2 Qe1+ 29. Kg2 Qa5 30. R8c7 Qd5+ 31. Kh3 a5 32. R7c5 Qd7+
33. Kg2 a4 34. Ra5 Qb7+ 35. Kh3 Qe4 36. Rcc5 g5 37. Rf5 Kg6 38. Rfb5 Qc4 39.
Rb6+ Kh5 40. Raa6 *
Position (FEN): 8/5p2/RR5p/6pk/p1q5/4P1PK/P4P1P/8 b - - 7 40
Black to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 1598
Best move: Qf1#