Chess puzzle (Advantage)
Opening: Kings_Pawn_Game, Kings_Pawn_Game_Leonardis_Variation
Moves: 1. e4 e5 2. d3 Nc6 3. c4 Bb4+ 4. Bd2 Nd4 *
Position (FEN): r1bqk1nr/pppp1ppp/8/4p3/1bPnP3/3P4/PP1B1PPP/RN1QKBNR w KQkq - 3 5
White to move.
Themes: Hanging Piece Opening  
Puzzle rating: 680
Best move: Bxb4