Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Traditional_Variation
Moves: 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5 Be7 5. e3 c5 6. dxc5 Qa5+ 7. Nc3 Qxc5 8.
cxd5 exd5 9. Bb5+ Bd7 10. Qa4 Nc6 11. Rc1 O-O 12. e4 Nxe4 *
Position (FEN): r4rk1/pp1bbppp/2n5/1Bqp2B1/Q3n3/2N2N2/PP3PPP/2R1K2R w K - 0 13
White to move.
Themes:  Middlegame  
Puzzle rating: 1588
Best move: Nxe4