Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Qxd4 Nc6 5. Bb5 Bd7 6. Bxc6 Bxc6 7. Nc3 Be7 8.
Nd5 Bxd5 9. Qxd5 c6 10. Qd3 Nf6 11. b3 O-O 12. Bb2 a5 13. a4 Qc7 14. O-O Rad8
15. c4 Ne8 16. Bc3 Bf6 17. Nd4 g6 18. f4 Bg7 19. f5 c5 20. Nb5 Qc6 21. f6 Bh8
22. Bxa5 Bxf6 23. Rxf6 Nxf6 24. Bxd8 Rxd8 25. Nc3 Re8 26. Re1 Re5 27. Re3 Kg7
28. Nd5 Nxd5 29. exd5 Qe8 30. Qc3 f6 31. Kf2 b6 32. Kf3 Qd7 33. Rxe5 fxe5 34.
Qe3 Qf5+ 35. Ke2 Qc2+ 36. Kf3 h6 37. h3 Qd1+ 38. Kg3 Qd4 39. Qe1 *
Position (FEN): 8/6k1/1p1p2pp/2pPp3/P1Pq4/1P4KP/6P1/4Q3 b - - 4 39
Black to move.
Themes:  Endgame, Queen Endgame Dovetail Mate, Mate in 1 
Puzzle rating: 974
Best move: Qf4#