Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. e5 f6 3. f4 fxe5 4. fxe5 g6 5. Nf3 Bg4 6. Be2 Nc6 7. O-O Bxf3 8.
Bxf3 Nxe5 9. Be2 Qd6 10. d4 Nc6 11. Bg4 Bg7 12. c3 h5 13. Bh3 e6 14. Bf4 e5 15.
Re1 Kf7 16. dxe5 Bxe5 17. Bxe5 Nxe5 18. c4 Qc5+ 19. Kh1 Nxc4 20. Rf1+ Kg7 21.
Qf3 Rf8 22. Qc3+ Kh7 23. Re1 Qf2 24. Na3 Nxa3 25. bxa3 Qf6 26. Qxc7+ Rf7 27.
Qc5 Re7 28. Qxd5 Rxe1+ 29. Rxe1 Nh6 30. Qxb7+ Kg8 31. Re8+ Qf8 32. Rxf8+ Kxf8
33. Qxa7 Nf7 34. Be6 Rh7 35. Qb8+ Ke7 36. Bxf7 Rxf7 37. a4 *
Position (FEN): 1Q6/4kr2/6p1/7p/P7/8/P5PP/7K b - - 0 37
Black to move.
Themes:  Endgame, Queen and Rook Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 1032
Best move: Rf1#