1. Qd2!

If 1... Kh4 then 2. Qg5#

If 1... Kg4 then 2. Qf4#

If 1... Kf3 then 2. Qf4# or 2. Qg2#

If 1... Bg4 then 2. Qf2#

If black moves the bishop anywhere else then 2. Qf4#