Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Other_variations
Moves: 1. d4 d5 2. e3 Bf5 3. Bd3 Bg6 4. f4 f5 5. Nf3 Nf6 6. Nbd2 Nbd7 7. O-O e6 8. b3
Be7 9. Ba3 *
Position (FEN): r2qk2r/pppnb1pp/4pnb1/3p1p2/3P1P2/BP1BPN2/P1PN2PP/R2Q1RK1 b kq - 2 9
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 981
Best move: Bxa3