Chess puzzle (Checkmate)
Moves: 1. f4 Nf6 2. d4 d5 3. Nf3 Bg4 4. e3 Bxf3 5. Qxf3 e6 6. c4 c6 7. c5 b6 8. b4 a5
9. Bd2 axb4 10. Bxb4 bxc5 11. dxc5 Ra4 12. a3 Na6 13. Nc3 Nxb4 14. Nxa4 Nc2+
15. Kf2 Nxa1 16. Bd3 Ne4+ 17. Ke2 Nb3 18. Bxe4 dxe4 19. Qxe4 Nxc5 20. Qxc6+ Nd7
21. Rd1 Bd6 22. Rxd6 O-O 23. Rxd7 Qb8 24. Rb7 Qa8 25. Qb5 g6 26. Kf2 Rc8 27.
Qd7 Rf8 28. h4 Qa5 29. Rb4 Qh5 30. g3 Qg4 31. Nc5 Qh3 32. Qd3 Qh2+ 33. Kf3 Qh1+
34. Kg4 h5+ 35. Kg5 Kg7 36. Ne4 Qxe4 37. Qxe4 *
Position (FEN): 5r2/5pk1/4p1p1/6Kp/1R2QP1P/P3P1P1/8/8 b - - 0 37
Black to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 910
Best move: f6#