4 variations / easyThis method is much slower than the ones I've shown you so far, and than ones I will show you later, but it is popular and sometimes useful. (thanks to Black Lightning and his Training Barrage map for showing me this one).
Build the necessary walls, after checking for mines, and wedge your tank between the two diagonal walls as shown above. It is possible to do this trick without the wall I've inverted in the illustration with a little practice, but it makes it easier to get your tank in the right position. Notice that there is a pattern as to which wall the pill will shoot at, and that the southwest example doesn't follow the same pattern as the other three.
medium