Chess puzzle (Advantage)
Opening: Ruy_Lopez, Ruy_Lopez_Morphy_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 5. Bb3 Bc5 6. c3 Nf6 7. d3 O-O 8. h3
Bb7 9. O-O a5 10. Re1 a4 11. Bc2 d6 12. b4 Bb6 13. a3 Ne7 14. Nbd2 Ng6 15. Nf1
d5 16. Bg5 dxe4 17. Bxf6 *
Position (FEN): r2q1rk1/1bp2ppp/1b3Bn1/1p2p3/pP2p3/P1PP1N1P/2B2PP1/R2QRNK1 b - - 0 17
Black to move.
Themes:  Middlegame  
Puzzle rating: 1390
Best move: Qxf6