Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Wing_Gambit
Moves: 1. e4 c5 2. b4 e6 3. bxc5 Bxc5 4. Bc4 *
Position (FEN): rnbqk1nr/pp1p1ppp/4p3/2b5/2B1P3/8/P1PP1PPP/RNBQK1NR b KQkq - 1 4
Black to move.
Themes:  Opening  
Puzzle rating: 2165
Best move: Qf6