Missed Tactics 5

Reviewing this blitz game, I saw a terrible miss from me ( as Black ).

So obvious in retrospect, and I am sure I would have seen it during a longer time frame, but my focus was on the pawn at d3.


Black to play and......

18. Qd1...Black to Play

Highlight for Solution if needed [  18... Qxd2 19. Qxd2 Nf3+  ]