Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. d3 c5 3. Nd2 Nc6 4. Ngf3 g6 5. g3 Bg7 6. Bg2 Nge7 7. O-O O-O 8. c3
d6 9. Re1 Rb8 10. a4 a6 11. Nf1 b5 12. axb5 axb5 13. h4 h6 14. Bd2 e5 15. Ne3
Be6 16. Qc2 f5 17. exf5 gxf5 18. Nh2 Qd7 19. f4 exf4 20. gxf4 d5 21. Nf3 d4 22.
Nf1 Bd5 23. N1h2 Ra8 24. Kf2 Qd6 25. Rad1 Ng6 26. Kg3 dxc3 27. bxc3 Ra2 28. Qb1
Qxf4+ 29. Bxf4 Nxf4 30. Kxf4 Rxg2 31. Qxb5 Rg4+ 32. Ke3 Rg2 33. Qxc5 *
Position (FEN): 5rk1/6b1/2n4p/2Qb1p2/7P/2PPKN2/6rN/3RR3 b - - 0 33
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1925
Best move: f4#