Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nxc6 bxc6 7. Bc4 Bb4 8.
Bd2 Bxc3 9. Bxc3 Nxe4 10. O-O Nxc3 11. bxc3 d5 12. Bb3 O-O 13. Qe2 Qc7 14. Rfe1
e4 15. Rad1 Be6 16. c4 Rfd8 17. cxd5 cxd5 18. Rc1 a5 19. a4 Rac8 20. Qb5 Rb8
21. Qe2 Qc5 22. Qe3 Qxe3 23. Rxe3 f5 24. g3 Kf7 25. h4 Rd6 26. c4 dxc4 27. Bxc4
Rb4 28. Bxe6+ Rxe6 29. Ra1 Rd6 30. Kg2 Rdd4 31. Rea3 Ke6 32. Kf1 h6 33. Ke2 g5
34. Ke3 Ke5 35. Ke2 Rb2+ 36. Ke3 f4+ 37. gxf4+ *
Position (FEN): 8/8/7p/p3k1p1/P2rpP1P/R3K3/1r3P2/R7 b - - 0 37
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1334
Best move: gxf4#