Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Mediterranean_Defense
Moves: 1. e4 e6 2. d4 Nf6 3. e5 Ng8 4. Nc3 d5 5. Nf3 Ne7 6. Bb5+ Bd7 7. Qd3 c5 8.
Bxd7+ Nxd7 9. O-O Nc6 10. Re1 Be7 11. Ne2 Qb6 12. c3 O-O 13. Rb1 f6 14. Bf4 Qc7
*
Position (FEN): r4rk1/ppqnb1pp/2n1pp2/2ppP3/3P1B2/2PQ1N2/PP2NPPP/1R2R1K1 w - - 2 15
White to move.
Themes:  Middlegame  
Puzzle rating: 1122
Best move: exf6