Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Knight_Variation
Moves: 1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. Nc3 c6 5. d4 Nf6 6. Bd3 Bg4 7. Qe2+ Be7 8.
Bg5 Nbd7 9. O-O-O O-O 10. Be3 Bxf3 11. gxf3 Nh5 12. Rhg1 g6 13. f4 Ng7 14. f5
Nf6 15. Bg5 Ne4 16. f6 Nxf6 17. Rde1 Ne4 18. Bxe4 *
Position (FEN): r2q1rk1/pp2bpnp/2p3p1/3p2B1/3PB3/2N5/PPP1QP1P/2K1R1R1 b - - 0 18
Black to move.
Themes:  Middlegame  
Puzzle rating: 806
Best move: Bxg5+