Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Mason_Variation
Moves: 1. d4 d5 2. Bf4 Nc6 3. e3 Nf6 4. Nd2 e6 5. Ngf3 Be7 6. c3 O-O 7. Bd3 a6 8. h4
Nh5 9. Ne5 Nxf4 10. exf4 Nxe5 11. dxe5 Bxh4 12. g4 Be7 13. Qc2 c5 14. Bxh7+ Kh8
15. O-O-O g6 16. Rh2 Kg7 17. Rdh1 Rh8 18. f5 exf5 19. gxf5 *
Position (FEN): r1bq3r/1p2bpkB/p5p1/2ppPP2/8/2P5/PPQN1P1R/2K4R b - - 0 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 1383
Best move: Bxf5