Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Kan_Variation
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Be3 Qc7 6. Nc3 g6 7. Qd2 Bg7 8.
O-O-O h5 9. h4 Ne7 10. Kb1 Nbc6 11. f3 b5 12. Bxb5 *
Position (FEN): r1b1k2r/2qpnpb1/p1n1p1p1/1B5p/3NP2P/2N1BP2/PPPQ2P1/1K1R3R b kq - 0 12
Black to move.
Themes:  Middlegame  
Puzzle rating: 1912
Best move: axb5