Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Traditional_Variation
Moves: 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bg5 Be7 5. Nc3 c6 6. e3 Nbd7 7. cxd5 exd5 8.
Bd3 Qc7 9. Qc2 O-O 10. Bh4 Re8 11. Ng5 Ne4 12. Ncxe4 *
Position (FEN): r1b1r1k1/ppqnbppp/2p5/3p2N1/3PN2B/3BP3/PPQ2PPP/R3K2R b KQ - 0 12
Black to move.
Themes:  Middlegame  
Puzzle rating: 1684
Best move: dxe4