Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Advance_Variation
Moves: 1. e4 e6 2. Nf3 d5 3. e5 c5 4. d4 Nc6 5. c3 Qb6 6. a3 Bd7 7. dxc5 Bxc5 8. Qc2
Rc8 9. b4 Bxb4 *
Position (FEN): 2r1k1nr/pp1b1ppp/1qn1p3/3pP3/1b6/P1P2N2/2Q2PPP/RNB1KB1R w KQk - 0 10
White to move.
Themes:  Opening  
Puzzle rating: 1664
Best move: axb4