Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Marshall_Defense
Moves: 1. d4 d5 2. c4 Nf6 3. cxd5 Qxd5 4. Nc3 Qa5 5. Bd2 c6 6. Ne4 Qd5 7. Nxf6+ gxf6
8. Nf3 e5 9. Bc3 Bg4 10. Qc2 Nd7 11. e4 Qe6 12. Nd2 O-O-O 13. Bc4 Qe8 14. d5
Nb6 15. dxc6 Nxc4 16. cxb7+ Kxb7 17. Nxc4 Qb5 18. Ba5 Rc8 19. Nd6+ *
Position (FEN): 2r2b1r/pk3p1p/3N1p2/Bq2p3/4P1b1/8/PPQ2PPP/R3K2R b KQ - 4 19
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1028
Best move: Bxd6