Chess puzzle (Advantage)
Opening: Ruy_Lopez, Ruy_Lopez_Classical_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O d6 5. c3 a6 6. Ba4 b5 7. Bc2 Bg4 8. d4
exd4 9. cxd4 Nxd4 10. Nbd2 Nf6 11. Re1 O-O 12. Bd3 Nh5 13. Bf1 Bb4 14. Re3 Bxd2
15. Bxd2 Qf6 16. Bc3 Nxf3+ *
Position (FEN): r4rk1/2p2ppp/p2p1q2/1p5n/4P1b1/2B1Rn2/PP3PPP/R2Q1BK1 w - - 0 17
White to move.
Themes:  Middlegame  
Puzzle rating: 1110
Best move: gxf3