Chess puzzle (Advantage)
Opening: Philidor_Defense, Philidor_Defense_Other_variations
Moves: 1. e4 e5 2. Nf3 d6 3. Bc4 Bg4 4. h3 Bh5 5. d3 h6 6. Nc3 Nc6 7. Bd5 Nf6 8. Bxc6+
bxc6 9. g4 Bg6 10. Nh4 Bh7 11. Be3 Nxe4 12. dxe4 Qxh4 13. Qd3 Be7 14. O-O-O d5
15. Qa6 O-O 16. Qxc6 *
Position (FEN): r4rk1/p1p1bppb/2Q4p/3pp3/4P1Pq/2N1B2P/PPP2P2/2KR3R b - - 0 16
Black to move.
Themes:  Middlegame  
Puzzle rating: 1518
Best move: d4