Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Accelerated_London_System
Moves: 1. d4 d5 2. Bf4 Nc6 3. Nf3 Bf5 4. Nbd2 Nf6 5. c3 e6 6. e3 Bd6 7. Bg3 Bxg3 8.
hxg3 Qd6 9. Nh4 O-O-O 10. Nxf5 exf5 11. Bd3 g6 12. Qc2 Ng4 13. Rf1 Rde8 14.
O-O-O Nf6 15. Bxf5+ *
Position (FEN): 2k1r2r/ppp2p1p/2nq1np1/3p1B2/3P4/2P1P1P1/PPQN1PP1/2KR1R2 b - - 0 15
Black to move.
Themes:  Middlegame  
Puzzle rating: 1297
Best move: gxf5