Chess puzzle (Advantage)
Opening: Three_Knights_Opening, Three_Knights_Opening_Other_variations
Moves: 1. e4 e5 2. Nf3 Nc6 3. Nc3 a6 4. Bb5 *
Position (FEN): r1bqkbnr/1ppp1ppp/p1n5/1B2p3/4P3/2N2N2/PPPP1PPP/R1BQK2R b KQkq - 1 4
Black to move.
Themes:  Opening  
Puzzle rating: 1035
Best move: axb5