Chess puzzle (Advantage)
Opening: Ruy_Lopez, Ruy_Lopez_Berlin_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Bxc6 dxc6 7. Nxe5 Be7
8. Qf3 O-O 9. Nc3 Bf6 10. Ng4 Be7 11. d3 Be6 12. Qg3 Qd7 13. Ne5 Qc8 14. Bh6 *
Position (FEN): r1q2rk1/ppp1bppp/2pnb2B/4N3/8/2NP2Q1/PPP2PPP/R3R1K1 b - - 6 14
Black to move.
Themes:  Middlegame  
Puzzle rating: 1324
Best move: Nf5