Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. Be2 Nge7 7. Na3 Ng6 8. Nc2
Be7 9. O-O O-O 10. Be3 Rc8 11. a3 cxd4 12. cxd4 f6 13. exf6 Bxf6 14. Rc1 a6 15.
b4 Nge7 16. Na1 Nf5 17. Nb3 Rc7 18. Bf4 Bc8 19. Bxc7 Qxc7 20. Qd2 Qf7 21. a4 h6
22. b5 axb5 23. axb5 Nce7 24. Bd3 Qh5 25. Rfe1 Ng6 26. Bxf5 Qxf5 27. Qc2 Qh5
28. Ne5 Nxe5 29. dxe5 Bxe5 30. g3 Bd6 31. Qe2 Qf7 32. f4 Bd7 33. Nd4 Re8 34.
Nf3 b6 35. Ne5 Bxe5 36. Qxe5 Bxb5 37. Rc7 Qf6 38. Ra1 Qg6 39. Raa7 Qb1+ 40. Kg2
*
Position (FEN): 4r1k1/R1R3p1/1p2p2p/1b1pQ3/5P2/6P1/6KP/1q6 b - - 7 40
Black to move.
Themes:  Endgame Dovetail Mate, Mate in 1 
Puzzle rating: 1291
Best move: Qf1#