Chess puzzle (Advantage)
Opening: Russian_Game, Russian_Game_Italian_Variation
Moves: 1. e4 e5 2. Nf3 Nf6 3. Bc4 Nxe4 4. Qe2 d5 5. Bb3 Nc6 6. a3 Be6 7. d3 Nc5 8.
Nxe5 Nxe5 9. Qxe5 Nxb3 10. cxb3 Bd6 11. Qe3 Qf6 12. d4 O-O 13. O-O Rfe8 14. Nc3
Bg4 15. Qd2 Qh4 16. g3 Qh3 17. f3 Bd7 18. Nxd5 Bc6 19. Nf4 *
Position (FEN): r3r1k1/ppp2ppp/2bb4/8/3P1N2/PP3PPq/1P1Q3P/R1B2RK1 b - - 2 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 1257
Best move: Bxf4