Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Nyezhmetdinov-Rossolimo_Attack
Moves: 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. O-O Bg7 6. b3 *
Position (FEN): r1bqk1nr/pp2ppbp/2p3p1/2p5/4P3/1P3N2/P1PP1PPP/RNBQ1RK1 b kq - 0 6
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 1010
Best move: Bxa1