Chess puzzle (Crushing)
Opening: Ruy_Lopez, Ruy_Lopez_Marshall_Attack
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. Re1 O-O 8. c3
d5 9. exd5 Nxd5 10. Bc2 f6 11. h3 Bc5 12. a4 Bb7 13. b4 Bd6 14. Nh4 Nce7 15.
axb5 axb5 16. Rxa8 Qxa8 17. Qh5 h6 18. d4 Nf4 *
Position (FEN): q4rk1/1bp1n1p1/3b1p1p/1p2p2Q/1P1P1n1N/2P4P/2B2PP1/1NB1R1K1 w - - 1 19
White to move.
Themes:  Middlegame  
Puzzle rating: 1517
Best move: Bxf4