Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Exchange_Variation
Moves: 1. e4 e6 2. d4 d5 3. exd5 exd5 4. c4 Nf6 5. Nf3 Bb4+ 6. Nc3 O-O 7. cxd5 Re8+ 8.
Be2 Nxd5 9. O-O *
Position (FEN): rnbqr1k1/ppp2ppp/8/3n4/1b1P4/2N2N2/PP2BPPP/R1BQ1RK1 b - - 1 9
Black to move.
Themes:  Opening  
Puzzle rating: 1723
Best move: Bxc3