Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Other_variations
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bf4 Bd6 5. Bg5 Be7 6. c5 h6 7. Bf4 c6 8. Nf3
O-O 9. b4 Ne4 10. Nxe4 dxe4 11. Qc2 *
Position (FEN): rnbq1rk1/pp2bpp1/2p1p2p/2P5/1P1PpB2/5N2/P1Q1PPPP/R3KB1R b KQ - 1 11
Black to move.
Themes:  Middlegame  
Puzzle rating: 1294
Best move: exf3