Chess puzzle (Advantage)
Opening: Scotch_Game, Scotch_Game_Other_variations
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nxd4 5. Qxd4 Nf6 6. Bd3 c5 7. Qa4 a6 8.
c4 Bd6 9. O-O O-O 10. Re1 Re8 11. Nd2 Qc7 12. Nf3 Ng4 13. h3 Ne5 14. Bf4 Nxd3
15. Bxd6 Qxd6 16. e5 Qd4 *
Position (FEN): r1b1r1k1/1p1p1ppp/p7/2p1P3/Q1Pq4/3n1N1P/PP3PP1/R3R1K1 w - - 1 17
White to move.
Themes:  Middlegame  
Puzzle rating: 920
Best move: Nxd4