Chess puzzle (Advantage)
Opening: Ruy_Lopez, Ruy_Lopez_Exchange_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 bxc6 5. d4 exd4 6. Nxd4 Nf6 7. O-O Be7 8.
Nc3 O-O 9. e5 Nd5 10. Bd2 Nxc3 11. Bxc3 c5 12. Nf3 d5 13. Re1 f6 14. exf6 Bxf6
15. Bxf6 Rxf6 16. c4 c6 17. Rc1 Bg4 18. h3 *
Position (FEN): r2q2k1/6pp/p1p2r2/2pp4/2P3b1/5N1P/PP3PP1/2RQR1K1 b - - 0 18
Black to move.
Themes:  Middlegame  
Puzzle rating: 1185
Best move: Bxf3