The standard Diplomacy game can often end up locked in a stalemate, with one player pushing for 18 territories, and two or more defenders trying to stop them. There are already many articles about this, including a useful visual index to stalemate positions. However, I have so far failed to find a Diplomacy map that was designed to prevent stalemates.
Firstly is it even possible to have such a map using the standard rules? Maybe there is logical reasoning that proves that a stalemateless board does not exist?
If it is possible, has it already been done? Does the lack of stalemate lines make the game more dynamic, or does it mean players have to be more edgy about attacking?
If it is not possible to create such a map, is there a variant that avoids stalemates with some other change to the rules? In one of the articles I saw it mentioned that "it is difficult to see" how certain variants could allow stalemates, but have any variants been designed with this goal in mind?