Chess puzzle (Advantage)
Opening: Philidor_Defense, Philidor_Defense_Other_variations
Moves: 1. e4 e5 2. Nf3 d6 3. Bc4 a6 4. O-O b5 5. Bd5 c6 6. Bb3 a5 7. a3 a4 8. Ba2 h6
9. d3 Bb7 10. Nc3 Nd7 11. h3 g5 12. Nh2 Ngf6 13. Ng4 h5 14. Nxf6+ Qxf6 15. Ne2
h4 16. Kh1 O-O-O 17. Ng1 Kb8 18. Nf3 Bh6 19. Qd2 *
Position (FEN): 1k1r3r/1b1n1p2/2pp1q1b/1p2p1p1/p3P2p/P2P1N1P/BPPQ1PP1/R1B2R1K b - - 7 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 1092
Best move: g4