Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Exchange_Variation
Moves: 1. e4 e6 2. d4 d5 3. exd5 exd5 4. c4 c6 5. Nc3 Nf6 6. Nf3 Be7 7. Be2 Bf5 8. O-O
O-O 9. cxd5 cxd5 10. Ne5 Ne4 11. Bg4 Nxc3 12. bxc3 Bxg4 13. Qxg4 Nc6 14. Nd7 *
Position (FEN): r2q1rk1/pp1Nbppp/2n5/3p4/3P2Q1/2P5/P4PPP/R1B2RK1 b - - 2 14
Black to move.
Themes:  Middlegame  
Puzzle rating: 1422
Best move: f5