Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Accelerated_London_System
Moves: 1. d4 d5 2. Bf4 Nc6 3. e3 Bf5 4. Nf3 e6 5. h3 Bd6 6. Bxd6 cxd6 7. Nh4 *
Position (FEN): r2qk1nr/pp3ppp/2npp3/3p1b2/3P3N/4P2P/PPP2PP1/RN1QKB1R b KQkq - 1 7
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 1398
Best move: Qxh4