Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Accelerated_London_System
Moves: 1. d4 d5 2. Bf4 f6 3. Nf3 g5 4. Bg3 h5 5. h3 Bh6 6. e3 f5 7. Be5 Nf6 8. Bd3 Nc6
9. Bxf6 exf6 10. Nfd2 a6 11. Qxh5+ Ke7 12. Qg6 *
Position (FEN): r1bq3r/1pp1k3/p1n2pQb/3p1pp1/3P4/3BP2P/PPPN1PP1/RN2K2R b KQ - 2 12
Black to move.
Themes: Defensive Move Opening  
Puzzle rating: 2301
Best move: Bf8