Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Winawer_Variation
Moves: 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. Nf3 Qb6 6. a3 cxd4 7. Nxd4 Bxc3+ 8.
bxc3 Ne7 9. Rb1 *
Position (FEN): rnb1k2r/pp2nppp/1q2p3/3pP3/3N4/P1P5/2P2PPP/1RBQKB1R b Kkq - 2 9
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 755
Best move: Qxb1