Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Advance_Variation
Moves: 1. e4 e6 2. d4 d5 3. e5 c5 4. Nf3 cxd4 5. Bb5+ Bd7 6. Nxd4 Bxb5 7. Nxb5 a6 8.
Nd4 Qc7 9. Bf4 g6 10. O-O Bg7 11. Re1 Ne7 12. c3 Nbc6 13. Qa4 O-O 14. Nd2 b5
15. Nxb5 *
Position (FEN): r4rk1/2q1npbp/p1n1p1p1/1N1pP3/Q4B2/2P5/PP1N1PPP/R3R1K1 b - - 0 15
Black to move.
Themes:  Middlegame  
Puzzle rating: 1109
Best move: axb5