Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Najdorf_Variation
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. O-O
O-O 9. Be3 Be6 10. f3 Nc6 11. Qd2 Qc7 12. Rad1 Rac8 13. Kh1 b5 14. Bxb5 *
Position (FEN): 2r2rk1/2q1bppp/p1npbn2/1B2p3/4P3/1NN1BP2/PPPQ2PP/3R1R1K b - - 0 14
Black to move.
Themes:  Middlegame  
Puzzle rating: 1257
Best move: axb5