Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Classical_Variation
Moves: 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. Qf3 dxe4 6. Nxe4 Nbd7 7. O-O-O O-O
8. Bd3 Nxe4 9. Qxe4 *
Position (FEN): r1bq1rk1/pppnbppp/4p3/6B1/3PQ3/3B4/PPP2PPP/2KR2NR b - - 0 9
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 1006
Best move: Bxg5+