Chess puzzle (Advantage)
Opening: Ruy_Lopez, Ruy_Lopez_Classical_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O a6 5. Bxc6 dxc6 6. Nxe5 h5 7. d3 h4 8.
Qf3 Be6 9. Nc3 Nf6 10. Na4 *
Position (FEN): r2qk2r/1pp2pp1/p1p1bn2/2b1N3/N3P2p/3P1Q2/PPP2PPP/R1B2RK1 b kq - 5 10
Black to move.
Themes:  Opening  
Puzzle rating: 2090
Best move: Bd4