Chess puzzle (Advantage)
Opening: Queens_Gambit_Accepted, Queens_Gambit_Accepted_Old_Variation
Moves: 1. d4 d5 2. c4 dxc4 3. e3 c5 4. Bxc4 cxd4 5. Qb3 e6 6. Nf3 dxe3 7. Bxe3 Nf6 8.
O-O Be7 9. Rd1 Qc7 10. Nc3 a6 *
Position (FEN): rnb1k2r/1pq1bppp/p3pn2/8/2B5/1QN1BN2/PP3PPP/R2R2K1 w kq - 0 11
White to move.
Themes:  Middlegame  
Puzzle rating: 1740
Best move: Bb6