Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Other_variations
Moves: 1. d4 d5 2. c4 Nf6 3. Nc3 e6 4. Bg5 Be7 5. cxd5 exd5 6. e3 O-O 7. Nf3 Bg4 8.
Be2 Nbd7 9. Qb3 Nb6 10. h3 Be6 11. Rc1 h6 12. Bf4 Ne4 13. Nxe4 *
Position (FEN): r2q1rk1/ppp1bpp1/1n2b2p/3p4/3PNB2/1Q2PN1P/PP2BPP1/2R1K2R b K - 0 13
Black to move.
Themes:  Middlegame  
Puzzle rating: 1115
Best move: dxe4