Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Smith-Morra_Gambit
Moves: 1. e4 c5 2. d4 cxd4 3. c4 dxc3 4. Nxc3 d6 5. Nf3 Nc6 6. Bb5 a6 7. Ba4 Nf6 8.
Bg5 b5 9. Nxb5 *
Position (FEN): r1bqkb1r/4pppp/p1np1n2/1N4B1/B3P3/5N2/PP3PPP/R2QK2R b KQkq - 0 9
Black to move.
Themes:  Middlegame  
Puzzle rating: 1679
Best move: axb5