Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Alapin_Variation
Moves: 1. e4 c5 2. c3 e6 3. d4 cxd4 4. cxd4 d5 5. exd5 exd5 6. Nc3 Nf6 7. Bd3 Bd6 8.
Bg5 a6 9. Nxd5 *
Position (FEN): rnbqk2r/1p3ppp/p2b1n2/3N2B1/3P4/3B4/PP3PPP/R2QK1NR b KQkq - 0 9
Black to move.
Themes:  Opening  
Puzzle rating: 1320
Best move: Qa5+