Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Accelerated_London_System
Moves: 1. d4 d5 2. Bf4 e6 3. Nc3 a6 4. e3 b5 5. Bxb5+ *
Position (FEN): rnbqkbnr/2p2ppp/p3p3/1B1p4/3P1B2/2N1P3/PPP2PPP/R2QK1NR b KQkq - 0 5
Black to move.
Themes:  Opening  
Puzzle rating: 1477
Best move: axb5