Bd4 seems to be a good move, threatening the knight at c5 as well as Qxf2+.

The way I see it, there are 3 replies for white. Nxb3, Nxd3 and Rd2.

Nxb3 seems more attractive to me since it gets an immediate Rook and Qxf2 doesn't seem to lead to a mate.

Rd2 seems least attractive since it loses the knight without any compensation.

However, I am not really sure, and I don't have the skills to do a deeper analysis.

I wish someone would post a comparison between the three moves (or something else I may have missed) with some explanation.

Bd4