Chess puzzle (Advantage)
Opening: Ruy_Lopez, Ruy_Lopez_Berlin_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Bxc6 dxc6 5. d4 Nxe4 6. Nxe5 Bd6 7. O-O O-O
8. Bf4 Qf6 9. Qf3 Bxe5 10. dxe5 Qf5 11. c3 g5 12. Bg3 Qxf3 13. gxf3 Nd2 *
Position (FEN): r1b2rk1/ppp2p1p/2p5/4P1p1/8/2P2PB1/PP1n1P1P/RN3RK1 w - - 1 14
White to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 889
Best move: Nxd2