Chess puzzle (Advantage)
Opening: Four_Knights_Game, Four_Knights_Game_Italian_Variation
Moves: 1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bc4 Nxe4 5. Nxe4 d5 6. Bxd5 Qxd5 7. Nc3 Qd8
8. O-O Bd6 9. Re1 O-O 10. d4 exd4 11. Nxd4 *
Position (FEN): r1bq1rk1/ppp2ppp/2nb4/8/3N4/2N5/PPP2PPP/R1BQR1K1 b - - 0 11
Black to move.
Themes:  Opening  
Puzzle rating: 1710
Best move: Nxd4