Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Four_Knights_Variation
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 a6 7. Nd6+ Bxd6 8.
Qxd6 Qe7 9. Bf4 e5 10. Qxe7+ Kxe7 11. Bg5 h6 12. Bh4 g5 13. Bg3 d6 14. O-O-O
Be6 15. Nd5+ Nxd5 *
Position (FEN): r6r/1p2kp2/p1npb2p/3np1p1/4P3/6B1/PPP2PPP/2KR1B1R w - - 0 16
White to move.
Themes:  Middlegame  
Puzzle rating: 1234
Best move: exd5