Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Steinitz_Variation
Moves: 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Qb6 7. Be3 Qxb2 *
Position (FEN): rnb1kb1r/pp1n1ppp/4p3/2ppP3/3P1P2/2N1BN2/PqP3PP/R2QKB1R w KQkq - 0 8
White to move.
Themes:  Opening  
Puzzle rating: 2083
Best move: Nb5