Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_French_Variation
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 Qa5+ 6. N1c3 Nf6 7. Bd3 a6 8.
Na3 *
Position (FEN): rnb1kb1r/1p1p1ppp/p4n2/q3p3/4P3/N1NB4/PPP2PPP/R1BQK2R b KQkq - 1 8
Black to move.
Themes:  Opening  
Puzzle rating: 1339
Best move: Bxa3