Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Scheveningen_Variation
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e6 7. Be3 b5 8. Qd2
Nbd7 9. O-O-O Bb7 10. Kb1 h5 11. Nb3 Rc8 12. Bxb5 *
Position (FEN): 2rqkb1r/1b1n1pp1/p2ppn2/1B5p/4P3/1NN1BP2/PPPQ2PP/1K1R3R b k - 0 12
Black to move.
Themes:  Middlegame  
Puzzle rating: 1071
Best move: axb5