Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Grand_Prix_Attack
Moves: 1. e4 c5 2. Nc3 Nc6 3. f4 d6 4. Nf3 a6 5. Bb5 *
Position (FEN): r1bqkbnr/1p2pppp/p1np4/1Bp5/4PP2/2N2N2/PPPP2PP/R1BQK2R b KQkq - 1 5
Black to move.
Themes:  Opening  
Puzzle rating: 1176
Best move: axb5