Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Other_variations
Moves: 1. d4 d5 2. h3 Nc6 3. Nf3 Bf5 4. a3 e6 5. Nc3 Bd6 6. Bg5 Nf6 7. e3 h6 8. Bxf6
Qxf6 9. Bd3 Bxd3 10. Qxd3 O-O-O 11. O-O-O e5 12. Nxd5 Qe6 13. dxe5 Bxe5 14.
Nxe5 Nxe5 15. Qe4 f5 16. Qd4 *
Position (FEN): 2kr3r/ppp3p1/4q2p/3Nnp2/3Q4/P3P2P/1PP2PP1/2KR3R b - - 1 16
Black to move.
Themes:  Middlegame  
Puzzle rating: 1775
Best move: c6