Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Accelerated_London_System
Moves: 1. d4 d5 2. Bf4 Bf5 3. e3 e6 4. Nf3 c5 5. Nh4 *
Position (FEN): rn1qkbnr/pp3ppp/4p3/2pp1b2/3P1B1N/4P3/PPP2PPP/RN1QKB1R b KQkq - 1 5
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 1418
Best move: Qxh4