Chess puzzle (Advantage)
Opening: Ruy_Lopez, Ruy_Lopez_Marshall_Attack
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3
d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 Nf6 12. d4 Bd6 13. Re1 Ng4 14. h3 Nxf2
15. Kxf2 Qh4+ 16. Kf1 Bxh3 17. Qf3 *
Position (FEN): r4rk1/2p2ppp/p2b4/1p6/3P3q/1BP2Q1b/PP4P1/RNB1RK2 b - - 1 17
Black to move.
Themes:  Middlegame  
Puzzle rating: 1824
Best move: Bg4