Make a Plan
When on opening lead you should strive to form a basic plan for the defense. Of course this may change as the play develops, but it will more often than not help you to make an effective opening lead. This advice is most useful against slams, when the opponents will most likely have given away a lot of information on the route to the six-level, allowing you to plan an accurate course to two tricks. Against contracts at lower levels it’s of course more difficult, but the auction can still guide you, and if you have the majority of the defensive strength a plan will be easier to make.
As South on these five problems try and form a defensive plan before you kick off.