Chess puzzle (Advantage)
Opening: Four_Knights_Game, Four_Knights_Game_Italian_Variation
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bc4 Nxe4 5. O-O Nf6 6. Re1 Be7 7. Nxe5 Nxe5
8. Rxe5 d6 9. Re1 Bg4 10. f3 Bd7 11. d3 O-O 12. Bg5 h6 13. Bh4 Re8 14. Qd2 a5
15. Rad1 a4 16. Nd5 *
Position (FEN): r2qr1k1/1ppbbpp1/3p1n1p/3N4/p1B4B/3P1P2/PPPQ2PP/3RR1K1 b - - 1 16
Black to move.
Themes:  Middlegame  
Puzzle rating: 912
Best move: Nxd5