Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Knight_Variation
Moves: 1. e4 e6 2. Nf3 b6 3. d4 Bb7 4. Nc3 c5 5. dxc5 Bxc5 6. Bb5 Nf6 7. e5 Nd5 8.
Nxd5 Bxd5 9. O-O O-O 10. Nd4 a6 11. Ba4 b5 12. Bb3 Bb7 13. a4 Qb6 14. axb5 *
Position (FEN): rn3rk1/1b1p1ppp/pq2p3/1Pb1P3/3N4/1B6/1PP2PPP/R1BQ1RK1 b - - 0 14
Black to move.
Themes:  Opening  
Puzzle rating: 674
Best move: Bxd4