Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Advance_Variation
Moves: 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Be3 cxd4 7. Nxd4 Nxd4 8.
Bxd4 Qxb2 9. Nd2 Qa3 *
Position (FEN): r1b1kbnr/pp3ppp/4p3/3pP3/3B4/q1P5/P2N1PPP/R2QKB1R w KQkq - 2 10
White to move.
Themes:  Opening  
Puzzle rating: 1420
Best move: Bb5+