Chess puzzle (Advantage)
Opening: Queens_Gambit_Accepted, Queens_Gambit_Accepted_Old_Variation
Moves: 1. d4 d5 2. c4 dxc4 3. e3 Be6 4. Nc3 Nf6 5. Bxc4 Bxc4 6. Qa4+ b5 7. Nxb5 c6 8.
Qxc4 cxb5 9. Qxb5+ Qd7 10. Qc4 e6 11. Bd2 Nc6 12. Nf3 Rb8 13. b3 Bb4 14. Bxb4
Rxb4 15. Qc5 Ne4 16. Qc2 O-O 17. Rc1 Nxf2 18. Qxf2 e5 19. Qc2 Nxd4 *
Position (FEN): 5rk1/p2q1ppp/8/4p3/1r1n4/1P2PN2/P1Q3PP/2R1K2R w K - 0 20
White to move.
Themes:  Middlegame  
Puzzle rating: 1655
Best move: exd4