Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Advance_Variation
Moves: 1. e4 e6 2. d4 d5 3. e5 c5 4. Nf3 Qb6 5. Be3 Qxb2 6. Nbd2 Qb4 7. dxc5 Bxc5 *
Position (FEN): rnb1k1nr/pp3ppp/4p3/2bpP3/1q6/4BN2/P1PN1PPP/R2QKB1R w KQkq - 0 8
White to move.
Themes:  Opening  
Puzzle rating: 1717
Best move: Rb1