Chess puzzle (Advantage)
Opening: Scotch_Game, Scotch_Game_Scotch_Gambit
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. Bg5 Be7 6. Nxd4 Nxe4 7. Bxe7 Qxe7
8. O-O Ng5 9. Re1 Ne6 10. Nf5 Qf6 11. g4 O-O 12. Nc3 Ne5 *
Position (FEN): r1b2rk1/pppp1ppp/4nq2/4nN2/2B3P1/2N5/PPP2P1P/R2QR1K1 w - - 3 13
White to move.
Themes:  Opening  
Puzzle rating: 1767
Best move: Nd5