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 Nc6 7. Be3 Qb6 8. Qd2
Qxb2 9. Rb1 Qxb1+ *
Position (FEN): r1b1kb1r/pp1n1ppp/2n1p3/2ppP3/3P1P2/2N1BN2/P1PQ2PP/1q2KB1R w Kkq - 0 10
White to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1224
Best move: Nxb1