Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_London_System
Moves: 1. d4 d5 2. Bf4 Nf6 3. Nf3 g6 4. e3 Bg4 5. Be2 Bg7 6. Nbd2 O-O 7. c3 Nbd7 8. h3
Bxf3 9. Nxf3 c5 10. b3 cxd4 11. exd4 Nh5 12. Be3 e5 13. g4 exd4 14. Nxd4 Nhf6
15. h4 Ne5 16. g5 Nfg4 *
Position (FEN): r2q1rk1/pp3pbp/6p1/3pn1P1/3N2nP/1PP1B3/P3BP2/R2QK2R w KQ - 1 17
White to move.
Themes:  Middlegame  
Puzzle rating: 1271
Best move: Bxg4