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 Bd7 6. Bb5 Qb6 7. Bxc6 Bxc6 8. O-O
Ne7 9. b3 Nf5 10. Be3 Nxe3 11. fxe3 Bb5 12. Rf2 c4 13. b4 a5 14. a4 axb4 15.
cxb4 Bxb4 16. Nbd2 Bxd2 17. Nxd2 c3 18. Nb1 Bxa4 *
Position (FEN): r3k2r/1p3ppp/1q2p3/3pP3/b2P4/2p1P3/5RPP/RN1Q2K1 w kq - 0 19
White to move.
Themes:  Middlegame  
Puzzle rating: 1218
Best move: Rxa4