Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Advance_Variation
Moves: 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Nc6 6. Be2 Bd7 7. O-O Rc8 8. b3
cxd4 9. cxd4 Nb4 10. Na3 Ne7 11. Bb2 Nec6 12. Rc1 Nxa2 13. Rc2 Qxb3 14. Rxc6
Qxb2 15. Rxc8+ Bxc8 16. Qa4+ Bd7 17. Bb5 Bxb5 *
Position (FEN): 4kb1r/pp3ppp/4p3/1b1pP3/Q2P4/N4N2/nq3PPP/5RK1 w k - 0 18
White to move.
Themes:  Middlegame  
Puzzle rating: 1334
Best move: Nxb5